Revision as of 22:32, 28 March 2017 editMichael Hardy (talk | contribs)Administrators210,264 edits →On topics not within my professional qualifications← Previous edit | Latest revision as of 18:57, 17 November 2024 edit undoMichael Hardy (talk | contribs)Administrators210,264 edits →Puzzle | ||
(33 intermediate revisions by 3 users not shown) | |||
Line 3: | Line 3: | ||
{{User WikiProject Mathematics}}<br> | {{User WikiProject Mathematics}}<br> | ||
{{user statistician}}<br> | {{user statistician}}<br> | ||
{{User Fifteen Year Society}}<br> | |||
{{User en-N}}<br> | {{User en-N}}<br> | ||
{{User de-1}}<br> | {{User de-1}}<br> | ||
Line 26: | Line 27: | ||
|style="font-size: x-large; padding: 0; vertical-align: bottom; height: 1.1em;" | '''The Minor Barnstar''' | |style="font-size: x-large; padding: 0; vertical-align: bottom; height: 1.1em;" | '''The Minor Barnstar''' | ||
|- | |- | ||
|style="vertical-align: top; border-top: 1px solid gray;" | A Barnstar for minor edits, but not a minor Barnstar! Thank you for your tireless work: you wikify tons of articles, and explain wikipedia' standards to tons of users! ] <Small>(])</Small> 00:20, 8 April 2006 (UTC) | |style="vertical-align: top; border-top: 1px solid gray;" | A Barnstar for minor edits, but not a minor Barnstar! Thank you for your tireless work: you wikify tons of articles, and explain wikipedia' standards to tons of users! ] <Small>(])</Small> 00:20, 8 April 2006 (UTC) | ||
|} | |} | ||
Line 35: | Line 36: | ||
<!-- --> | <!-- --> | ||
{{award2|image=Barnstar-atom3.png|size=100px|topic=The E=MC² Barnstar|text=For making mathematical and statistical articles readable for the layperson. Specifically, I ran across ] on random article and was extremely impressed by your work. Keep it up! ]] 18:37, 25 August 2006 (UTC) }} | {{award2|image=Barnstar-atom3.png|size=100px|topic=The E=MC² Barnstar|text=For making mathematical and statistical articles readable for the layperson. Specifically, I ran across ] on random article and was extremely impressed by your work. Keep it up! ]] 18:37, 25 August 2006 (UTC) }} | ||
Thank you! ] 19:24, 25 August 2006 (UTC) | Thank you! ] 19:24, 25 August 2006 (UTC) | ||
Line 75: | Line 76: | ||
Thank you. ] 18:06, 2 September 2007 (UTC) | Thank you. ] 18:06, 2 September 2007 (UTC) | ||
<!-- --> | <!-- --> | ||
== The nature of libel in Misplaced Pages articles == | |||
* ] | |||
==Some normative comments on editing Misplaced Pages articles== | ==Some normative comments on editing Misplaced Pages articles== | ||
Line 120: | Line 125: | ||
* ], ] | * ], ] | ||
* ] | * ] | ||
* ] | |||
* ] | * ] | ||
* | * | ||
* ] | * ] | ||
* ] | |||
* ] | |||
* ] | * ] | ||
* ] | * ] | ||
Line 140: | Line 146: | ||
Find out from . <--- This one hasn't been working lately, except for dates before January 20, 2016. | Find out from . <--- This one hasn't been working lately, except for dates before January 20, 2016. | ||
: or this one: . | : or this one: . <--- Also no longer works | ||
== Shortest path from one article to another == | == Shortest path from one article to another == | ||
Line 158: | Line 164: | ||
] | ] | ||
(Many others have contributed to that one.) | (Many others have contributed to that one.) | ||
], ], | ], ], ], | ||
], ], | |||
], | ], | ||
], ], ], ], ], ], ], ], ], ], ], ], ], ] | ], ], ], ], ], ], ], ], ], ], ], ], ], ], ], ], ], ] | ||
===On probability, statistics, probabilists, and statisticians=== | ===On probability, statistics, probabilists, and statisticians=== | ||
Line 210: | Line 215: | ||
], ] (both stub articles; if they're more than stubs when you see them, then more recent edits have been done) | ], ] (both stub articles; if they're more than stubs when you see them, then more recent edits have been done) | ||
], ], ], ]--still a stub article at this time, ], ], ], ] (now still a stub), ], ], ], ], ], ], ], ], ] (a stub, but it clearly gives the definition), ], ], ], ], ], ], ], ], ], ] | ], ], ], ]--still a stub article at this time, ], ], ], ] (now still a stub), ], ], ], ], ], ], ], ], ] (a stub, but it clearly gives the definition), ], ], ], ], ], ], ], ], ], ], ] (a disambiguation page), ], | ||
===On other mathematical topics=== | ===On other mathematical topics=== | ||
Line 327: | Line 332: | ||
], ], | ], ], | ||
], ], ] (on a startling result in elementary geometry; the natural way to prove this is by ], but some authors perversely persist in relying only on other methods), ], ], ], | ], ], ] (on a startling result in elementary geometry; the natural way to prove this is by ], but some authors perversely persist in relying only on other methods), ], ], ], | ||
] (a stub article that identifies the purpose and the creator of the algorithm but doesn't describe it; hopefully others, if not I, will expand it), ], ], ], ], ], ] (currently stubby, but with a fairly good list of examples), ], ], ] — I created this one in somewhat stubby form after I noticed that dozens of Misplaced Pages articles mention this person; before creating it I put links to it into dozens of articles, | ] (a stub article that identifies the purpose and the creator of the algorithm but doesn't describe it; hopefully others, if not I, will expand it), ], ], ], ], ], ] (currently stubby, but with a fairly good list of examples), ], ], ] — I created this one in somewhat stubby form after I noticed that dozens of Misplaced Pages articles mention this person; before creating it I put links to it into dozens of articles, | ||
], ], ], ], ], ], ], ], ], ], ], ], ], ], ] (I translated the German article about him), | ], ], ], ], ], ], ], ], ], ], ], ], ], ], ] (I translated the German article about him), | ||
], ], ] (I created this in stubby form, and others expanded it far beyond that). ] (expanded by others since I created it), ], ] | ], ], ] (I created this in stubby form, and others expanded it far beyond that). ] (expanded by others since I created it), ], ], ], ], ], ], ], ] | ||
==Puzzle== | ==Puzzle== | ||
Line 429: | Line 434: | ||
]<br> | ]<br> | ||
]<br> | ]<br> | ||
] | ]<br> | ||
]<br> | |||
]<br> | |||
] | |||
]<br> | |||
] | |||
] | ] | ||
] | |||
] | ] |
Latest revision as of 18:57, 17 November 2024
This user is an administrator on the English Misplaced Pages. (verify) |
This user is a mathematician. |
This user is a participant in WikiProject Mathematics. |
This user is a statistician. |
This user has been editing Misplaced Pages for more than 15 years. |
en | This user is a native speaker of the English language. |
de-1 | Dieser Benutzer hat grundlegende Deutschkenntnisse. |
eo-2 | Ĉi tiu uzanto povas komuniki per meza nivelo de Esperanto. |
This user has been editing Misplaced Pages for more than ten years. |
Barnstars
The Barnstar of Diligence | ||
Your endless devotion to wikipedia is amazing. Keep it up! Memming (talk) 12:57, 2 April 2010 (UTC) |
The Minor Barnstar | ||
A Barnstar for minor edits, but not a minor Barnstar! Thank you for your tireless work: you wikify tons of articles, and explain wikipedia' standards to tons of users! gala.martin (what?) 00:20, 8 April 2006 (UTC) |
The Original Barnstar
This barnstar is given to recognize particularly fine contributions to Misplaced Pages, and to let you know that your hard work is seen and appreciated. evrik 23:15, 10 August 2006 (UTC) |
The E=MC² Barnstar
For making mathematical and statistical articles readable for the layperson. Specifically, I ran across Second-order logic on random article and was extremely impressed by your work. Keep it up! Teke 18:37, 25 August 2006 (UTC) |
Thank you! Michael Hardy 19:24, 25 August 2006 (UTC)
The Original Barnstar | ||
I award you this barnstar in recognition of your continued work on statistics articles. Just about every statistics article I look at has some important contributions by you. Keep up the good work! Zvika 08:13, 5 January 2007 (UTC) |
- Thank you. Michael Hardy 22:49, 5 January 2007 (UTC)
The Original Barnstar | ||
To Michael Hardy, on the occasion of Minneapolis, Minnesota reaching featured article. With thanks -Susanlesch 23:23, 28 June 2007 (UTC) |
- Thank you. Michael Hardy 06:08, 29 June 2007 (UTC)
The Original Barnstar | ||
To Michael Hardy, on the occasion of Laplace transform and many other mathematics articles in which he showed his skill and vast knowledge of HTML, TeX and Wiki details. I learned a lot from your edits. With thanks --Lantonov 06:19, 1 September 2007 (UTC) |
Thank you. Michael Hardy 18:06, 2 September 2007 (UTC)
The nature of libel in Misplaced Pages articles
Some normative comments on editing Misplaced Pages articles
Style tip
- "In ABCology, an X is a blah blah blah."
is superior to
- "X is a term used by ABCologists to describe a blah blah blah."
Here's another example (fictitious---a composite of several actual instances).
Keep links simple when possible
Writing ]ated, ]al, ]s, ]ary, ]nical, ]ian, ]tic, ]l, ]r, ]ic, ]ic, ]ary etc., makes the whole word, not just the part in the brackets, appear as a clickable link, which links to the article whose title is in the brackets. The more complicated form can be used for things like ].
Also, one does not need underscores as in ] or ].
a technical problem with templates
a useful TeXnicality
useful links
- Misplaced Pages:Graphic Lab/Images to improve
- http://meta.wikimedia.org/Help:Displaying_a_formula
- Misplaced Pages:Categories, lists, and series boxes
- List of mathematics categories
- How many people are watching a page?
- Misplaced Pages:Donating_copyrighted_materials
Misplaced Pages Mathematics Project
- Misplaced Pages:WikiProject Mathematics • Talk
- Misplaced Pages:WikiProject Mathematics/Typography • talk
- Misplaced Pages:WikiProject Mathematics/Current activity
- Misplaced Pages:WikiProject Mathematics/Nav
- Misplaced Pages:Pages needing attention/Mathematics/Lists
- Misplaced Pages:WikiProject Mathematics/Graphics, Misplaced Pages:Requested pictures
- Misplaced Pages:WikiProject Mathematics/Article alerts
- User talk:Nageh/mathJax
- http://www.mediawiki.org/Requests_for_comment/Reduce_math_rendering_preferences
- User:Mathbot/Changes to mathlists
- Category:Mathematics articles needing expert attention
- Misplaced Pages:WikiProject_Mathematics/Article_alerts/Archive
- User:AlexNewArtBot/MathSearchResult
- Misplaced Pages:WikiProject Deletion sorting/Mathematics
- The most colossal instance of sheer missing of the point, done with truly breathtaking unawareness of what one is doing, among all Misplaced Pages edits, may be this.
Statistics Project
Lists are better than categories
User:Michael Hardy/Lists are better than categories
How many times was a particular Misplaced Pages article viewed in a particular month?
Find out from this site. <--- This one hasn't been working lately, except for dates before January 20, 2016.
- or this one: this one: https://analytics.wmflabs.org/demo/pageview-api. <--- Also no longer works
Shortest path from one article to another
Some Misplaced Pages articles I originated
On topics not within my professional qualifications
John Gillespie Magee, Junior, self-evidence, tidal resonance, Woods Hole Oceanographic Institution, list of religious topics (Many others have contributed to that one.) list of optical topics, iridescence, sylvanshine, Foundation for the Advancement of Art, Elisha Otis, Roman Republic (19th century), effect of sun angle on climate, Marlon Knauer, Shyamala Rajender v. University of Minnesota, Karlis Kaufmanis, Admission to the Union, Line house, History of slavery in Vermont, History of slavery in Minnesota, Collins–Valentine line, Vermont v. New Hampshire, Sporhase v. Nebraska ex rel. Douglas, Oscillating gene, International Boundary Commission, Resignation from the United States Senate, National Master Freight Agreement, Prince of Darkness
On probability, statistics, probabilists, and statisticians
list of statistical topics, Gauss–Markov theorem, Completeness (statistics), Sufficiency (statistics), logit, Kolmogorov's zero-one law, martingale, margin of error, zeta distribution, Zipf's law, confidence interval, Bruno de Finetti, Maxwell's theorem, law of total probability, law of total expectation, law of total variance, Galton–Watson process, coherence (philosophical gambling strategy), cumulant, canonical correlation, Wishart distribution, Rao–Blackwell theorem, Student's t-distribution, Wiener process, errors and residuals in statistics, Seymour Geisser, prediction interval, rankit, continuity correction, Studentized residual, Studentized range, Cramér–Rao inequality
Francis Ysidro Edgeworth (a stub; if it's a long article when you read this, then someone else has contributed),
ancillary statistic, empirical Bayes method, Herbert Robbins, memorylessness, factorial moment, rule of succession, conditional independence, pairwise independence, prior probability distribution, infinite divisibility, a term used in physics, probability theory, and several other disciplines, Schrödinger method, Vandermonde's identity, an inequality on location and scale parameters, compound Poisson distribution,
In estimation of covariance matrices, I describe what seems to me to be a surprisingly subtle and elegant application of linear algebra. I have no idea who originated it; I seem to recall that it is in Morris Eaton's book on multivariate statistics, and I suppose it is in lots of others. In that argument you find out why it is sometimes better to view a scalar as the trace of a 1×1 matrix than as a mere scalar and then to apply certain matrix decompositions to it.
Lévy process, Wigner semicircle distribution, multinomial distribution, Ewens's sampling formula, imputation (statistics), law of total cumulance, copula (statistics) (incorporating some material from Sklar's theorem, which was created by User:Oo64eva and is now a redirect page), normally distributed and uncorrelated does not imply independent, list of stochastic processes topics, method of moments (statistics), method of moments (probability theory)
Eduard Helly, David Blackwell (both stub articles; if they're more than stubs when you see them, then more recent edits have been done)
le Cam's theorem, McCullagh's parametrization of the Cauchy distributions, Lilliefors test, empirical distribution function--still a stub article at this time, Poisson regression, Shapiro–Wilk test, location-scale family, Behrens–Fisher problem (now still a stub), Hausdorff moment problem, Hamburger moment problem, Stieltjes moment problem, Chinese restaurant process, indecomposable distribution, Wick product, Robbins lemma, Fisher's inequality, Chernoff's distribution (a stub, but it clearly gives the definition), Lack-of-fit sum of squares, Bhatia–Davis inequality, Samuelson's inequality, Popoviciu's inequality on variances, Raikov's theorem, An Essay towards solving a Problem in the Doctrine of Chances, Lester Dubins, Behrens–Fisher distribution, Minimum chi-square estimation, Poisson point process, Canonical link (a disambiguation page), Markov chain central limit theorem,
On other mathematical topics
inequality of arithmetic and geometric means, incidence algebra, Euler characteristic, stereographic projection, common logarithm, Dirichlet kernel,
exponential growth (a concept that "laymen" take to mean very fast growth, but which has a technical definition that need not imply great rapidity)
empty product This explains why, when you multiply no numbers at all, you get 1, and why 0 is almost always 1, and should be taken to be 1 for the purposes of set theory, combinatorics, probability, and power series.
binomial type, Sheffer sequence, umbral calculus, Bell numbers, Hermite polynomials, Chebyshev polynomials, Bernoulli polynomials, Gian-Carlo Rota
Archimedes Palimpsest This one mentions ancient history, mathematics, physics, engineering, an art museum, a federal lawsuit, and a very old hierarchical religious organization, in a very short space, without undue cramming;
How Archimedes used infinitesimals, Archimedean property, Eric Temple Bell, Arthur Cayley, Riemann–Stieltjes integral, bounded variation, Ferdinand von Lindemann, Charles Hermite,
orthogonal polynomials (Do not move that article to "orthogonal polynomial" under a delusion that that would conform to the convention of titling an article "dog" rather than "dogs". That would be absurd. There is no such thing as an orthogonal polynomial; there is such a thing as orthogonal polynomials.),
pointwise convergence, Bernstein polynomial, George Boolos, Cantor's theorem, Löwenheim–Skolem theorem, second-order logic (much expanded by others since I started it)
Cantor's first uncountability proof. This proof shows that the set of all real numbers is uncountable, but this proof is not a diagonal argument! This article has since been sweepingly revised by user:RJGray, who added material on a dispute over whether the proof is constructive and material derived from letters between Cantor and colleagues.
inclusion-exclusion principle, linearly ordered group, Boolean prime ideal theorem, uniform norm, Galton–Watson process, coherence (philosophical gambling strategy), dominated convergence theorem, Robertson–Seymour theorem, double integral (not the same as an "iterated integral"; see the article), Fubini's theorem, mathematical logic, Girard Desargues, Desargues' theorem, parallelogram law, Hamel basis, König's theorem, Schur complement (that article needs more work), combinatorial species (I left this one a stubby article that was barely a definition and two or three more-or-less obvious examples; AlexG has since added an account of operations on combinatorial species and lots of essential facts), A simple proof that 22/7 exceeds pi, Putnam Competition, Stone's representation theorem for Boolean algebras, Separation of variables, moment (a disambiguation page), list of mathematical examples (still in its infancy) Möbius transform, cross-ratio, Morera's theorem, Mahler's theorem, Cauchy principal value, Pincherle derivative
Radius of convergence -- This article includes an example of the fact that complex numbers are sometimes simpler than real numbers; they allow us to quickly find the radius of convergence of a power series in which the coefficients are Bernoulli numbers. (As you see from the previous sentence, I firmly believe in splitting infinitives on occasion.) Faà di Bruno's formula,
I moved the anonymously written "absolutely continuous" page to absolute continuity and rewrote it from scratch, including both absolute continuity of real functions, and absolute continuity of measures and the Radon–Nykodym theorem.
An infinitely differentiable function that is not analytic -- Although this is merely the usual example, I explained (albeit tersely, so far) its relevance to Schwartz's theory of generalized functions: One can construct test functions (i.e., infinitely differentiable functions with bounded support) with prescribed behavior on an interval. The existence of such functions must be known before we can confidently say that Schwartz's whole theory is not vacuous.
Moreau's necklace-counting function, cyclotomic identity, proof that holomorphic functions are analytic, branch point, Bell polynomials, Pedoe's inequality, Hadwiger's theorem (a stub; if it's a long article when you read this, then someone else has contributed), defect (geometry) (a fairly terse article so far....), Dandelin spheres, matrix exponential (others have added material to that one), noncrossing partition, uses of trigonometry, Bohr–Mollerup theorem, characterization (mathematics), list of Boolean algebra topics, germ (mathematics), Lissajous curve -- someone has since edited that one by adding illustrations, Cauchy product, Gibbs phenomenon -- a number of people have worked on this one, Schrödinger method, Vandermonde's identity, list of Fourier analysis topics, Muirhead's inequality, Stanley's reciprocity theorem, exponential formula, method of distinguished element, Stirling transform, osculating circle, list of circle topics, list of knot theory topics, Cantor's back-and-forth method, list of set theory topics, rencontres numbers, Bernstein's theorem, multiplicities of entries in Pascal's triangle, Dobinski's formula, Brahmagupta–Fibonacci identity (originally titled Fibonacci's identity; that is now a disambiguation page), alternating permutation, spread polynomials, Faulhaber's formula, Appell sequence, caloric polynomial, Johan Frederik Steffensen---stubby so far..., Lester's theorem, Monge's theorem, polar sine, Hermite–Hadamard inequality, Steiner inellipse, Marden's theorem, (Lommel–Weber function After I created this, it was found that three articles on this topic existed under different titles, which then got merged, so this page now redirects to another.), Regiomontanus' angle maximization problem, Bloch's theorem (complex variables), List of topics named after Bernhard Riemann, Cavalieri's principle, Napkin ring problem (on a startling result in elementary geometry; the natural way to prove this is by Cavalieri's principle, but some authors perversely persist in relying only on other methods), Lune of Hippocrates, Mollweide's formula, Bonse's inequality, Landau's algorithm (a stub article that identifies the purpose and the creator of the algorithm but doesn't describe it; hopefully others, if not I, will expand it), List of topics named after Fibonacci, List of topics named after Augustin-Louis Cauchy, Harold Edwards (mathematician), nLab, Erdős–Kac theorem, Triangular array (currently stubby, but with a fairly good list of examples), List of topics named after Karl Weierstrass, Tangent half-angle substitution, Gerald J. Toomer — I created this one in somewhat stubby form after I noticed that dozens of Misplaced Pages articles mention this person; before creating it I put links to it into dozens of articles, Ptolemy's table of chords, Haynsworth inertia additivity formula, Patrick Billingsley, Integral of the secant function, Tikhonov's theorem (dynamical systems), Śleszyński–Pringsheim theorem, Tree of primitive Pythagorean triples, Hermite's cotangent identity, Kummer's theorem, Niven's theorem, Sendov's conjecture, List of things named after Charles Hermite, Loximuthal projection, Mean-periodic function, Tsit Yuen Lam (I translated the German article about him), Grace–Walsh–Szegő theorem, Cohn-Vossen's inequality, Cyclic sieving (I created this in stubby form, and others expanded it far beyond that). Maryna Viazovska (expanded by others since I created it), Dixon's elliptic functions, Orthopole, List of nonlinear partial differential equations, Glasser's master theorem, Lévy–Steinitz theorem, Convolution quotient, Reducing subspace, Bernoulli quadrisection problem
Puzzle
See if you can spot the difference between this:
and this:
Without looking at the TeX code, and guess how and—perhaps more subtly—why the difference was achieved.
- That's subtle! Here is a cruder way of achieving the same effect:
- --RockMagnetist (talk) 04:53, 29 September 2010 (UTC)
- Actually this latter version by RockMagnetist is incorrect. The correct version, however, doesn't seem to work with our maths module, so I must show it in the commented spoiler below.
- --RockMagnetist (talk) 04:53, 29 September 2010 (UTC)
- Yea, I got the visual difference quickly but am uncertain what RockMagnetist is perceiving. I was going to put my observation up here and then realized when I saw the spoiler notes, that it would in fact be a spoiler. For those of us non-mathematicians, we certainly take some things for granted... Regards, Steve... Stevenmitchell (talk) 05:24, 8 March 2011 (UTC)
- – b_jonas 12:23, 7 December 2010 (UTC)
My answer to the question above is this: When "+" is a binary operator, there is a space on each side of it, thus: 3 + 5. But when it is a unary operator, there isn't, thus: +5. In TeX, when you write +5 at the beginning of a line, the software construes it as unary since nothing comes before it (on the same line). But if you want it to be read as binary, you write {} +5, and then there's something (albeit invisible) before it, so it gets rendered as + 5. Michael Hardy (talk) 19:49, 12 May 2012 (UTC)
http://www.mathpages.com
User:Michael Hardy/-ery
User:Michael Hardy/certain stereotypes
User:Michael Hardy/Gauss link invariant
User:Michael Hardy/scratchwork
User:Michael Hardy/Matrix spectral decompositions in statistics
User:Michael Hardy/show-or-hide
User:Michael Hardy/transfer principle
User:Michael Hardy/slope t-test
User:Michael Hardy/Ernst Snapper
User:Michael Hardy/Petry on Euler's zeta function
User:Michael Hardy/Tukey
User talk:Michael Hardy/A remark on epistemic probabilities
Techblog
User:RJGray/Sandbox
User:Michael Hardy/COI and SPAM templates
User:Michael Hardy/Newton
Titchmarsh convolution theorem
User:Michael Hardy/Euler's derivation of the sine series
User:Michael Hardy/The earth rotates
User:Michael Hardy/an integral
User:Michael Hardy/Hadley
User:Michael Hardy/Everest (mathematical competition) (written primarily by User:Luka.W.B.)
User:Michael Hardy/any
User:Michael Hardy/-ling
User:Michael Hardy/Greek.chord.table
User:Michael Hardy/Archaic Greek letters
User:Michael Hardy/Abelian
User:Michael Hardy/named after Bayes
User:Michael Hardy/German prepositions
User:Michael Hardy/proof of André's theorem
User:Michael Hardy/chocolate.Nobel
User:Michael Hardy/Ford Award
User:Michael Hardy/Farnham
User:Michael Hardy/Cyclic function
User:Michael Hardy/Vermont full faith and credit
User:Michael Hardy/Envelope model
List of things named after Andrey Markov
User:Michael Hardy/executive authority
User:Michael Hardy/tangent half-angle derivation
- Misplaced Pages administrators
- Wikipedian mathematicians
- WikiProject Mathematics participants
- Wikipedians interested in mathematics
- Wikipedian statisticians
- Members of the Fifteen Year Society of Misplaced Pages editors
- User en-N
- User de-1
- User eo
- User eo-2
- Members of the Ten Year Society of Misplaced Pages editors
- Misplaced Pages administrators willing to provide copies of deleted articles