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A Bird in Flight are bird-like geometric patterns that were introduced by mathematical artist Hamid Naderi Yeganeh. Yeganeh has created these figures by combing through tens of thousands of computer-generated images. They are defined by trigonometric functions. An example of such patterns is a set of 500 line segments where for each ${\displaystyle i=1,2,3,\ldots ,500}$ the endpoints of the ${\displaystyle i}$-th line segment are:

${\displaystyle \left({\frac {3}{2}}\left(\sin \left({\frac {2\pi i}{500}}+{\frac {\pi }{3}}\right)\right)^{7},\,{\frac {1}{4}}\left(\cos \left({\frac {6\pi i}{500}}\right)\right)^{2}\right)}$

and

${\displaystyle \left({\frac {1}{5}}\sin \left({\frac {6\pi i}{500}}+{\frac {\pi }{5}}\right),\,{\frac {-2}{3}}\left(\sin \left({\frac {2\pi i}{500}}-{\frac {\pi }{3}}\right)\right)^{2}\right)}$.

References

1. ""A Bird in Flight (2015)," by Hamid Naderi Yeganeh". American Mathematical Society. September 16, 2015. Retrieved September 19, 2015.
2. Young, Lauren (January 19, 2016). "Math Is Beautiful". Science Friday.
3. ""A Bird in Flight (2016)," by Hamid Naderi Yeganeh". American Mathematical Society. March 23, 2016. Retrieved March 29, 2017.
4. Passaro, Davide. "Matematica e arti visive: percorsi interdisciplinari fra matematica, arte e coding". Maddmaths!. SIMAI Società Italiana di Matematica Applicata e Industriale. Retrieved 2019-02-04.
5. ""A Bird in Flight"". Futility Closet. April 22, 2018. Archived from the original on April 23, 2018. Retrieved 25 March 2020.
6. "수학적 아름다움, 프랙털 아트의 세계" [Mathematical beauty, the world of fractal art]. Sciencetimes (in Korean). 8 December 2020. Archived from the original on 8 December 2020. Retrieved 8 December 2020.
7. "Mathematical Concepts Illustrated by Hamid Naderi Yeganeh". American Mathematical Society. November 2014. Retrieved September 19, 2015.
8. "Mathematical Works of Art". Gustavus Adolphus College. September 18, 2014. Retrieved September 19, 2015.
9. "This is not a bird (or a moustache)". Plus Magazine. January 8, 2015. Retrieved September 19, 2015.
10. Cavanagh, Peter (March 5, 2021). Avian Arithmetic: The mathematics of bird flight (Speech). National Museum of Mathematics' Events. MoMath Online, NY, United States. Retrieved 5 April 2021.
11. Gustlin, Deborah. "15.4: Digital Art". LibreTexts. Retrieved 19 March 2020.
12. "Mathematics Portal - IMKT". International Mathematical Knowledge Trust. Retrieved 24 February 2020.
13. Antonick, Gary (January 25, 2016). "Round Robin". The New York Times. Retrieved 27 February 2020.
14. Chung, Stephy (September 18, 2015). "Next da Vinci? Math genius using formulas to create fantastical works of art". CNN.
15. Baugher, Janée J. (2020). The Ekphrastic Writer: Creating Art-Influenced Poetry, Fiction and Nonfiction. McFarland and Company, Inc., Publishers. p. 56. ISBN 9781476639611.
16. Naderi Yeganeh, Hamid (September 11, 2015). "Importing Things From the Real World Into the Territory of Mathematics!". Huffington Post (blog).
17. "Von Formeln und Vögeln". Spektrum der Wissenschaft (in German). 05/2021: 47. February 4, 2021. ISSN 0170-2971. Retrieved 7 February 2021.
18. Mellow, Glendon (August 6, 2015). "Mathematically Precise Crosshatching". Scientific American (blog).

v t e Mathematics and art
Concepts	Algorithm Catenary Fractal Golden ratio Hyperboloid structure Minimal surface Paraboloid Perspective Camera lucida Camera obscura Plastic ratio Projective geometry Proportion Architecture Human Symmetry Tessellation Wallpaper group
Forms	Algorithmic art Anamorphic art Architecture Geodesic dome Pyramid Vastu shastra Computer art Fiber arts 4D art Fractal art Islamic geometric patterns Girih Jali Muqarnas Zellij Knotting Celtic knot Croatian interlace Interlace Music Origami Mathematics Sculpture String art String figure Tiling
Artworks	List of works designed with the golden ratio Continuum Mathemalchemy Mathematica: A World of Numbers... and Beyond Octacube Pi Pi in the Sky
Buildings	Cathedral of Saint Mary of the Assumption Hagia Sophia Kresge Auditorium Pantheon Parthenon Pyramid of Khufu Sagrada Família Sydney Opera House Taj Mahal
Artists	Renaissance Paolo Uccello Piero della Francesca Leonardo da Vinci Vitruvian Man Albrecht Dürer Parmigianino Self-portrait in a Convex Mirror 19th–20th Century William Blake The Ancient of Days Newton Jean Metzinger Danseuse au café L'Oiseau bleu Giorgio de Chirico Man Ray M. C. Escher Circle Limit III Print Gallery Relativity Reptiles Waterfall René Magritte La condition humaine Salvador Dalí Crucifixion The Swallow's Tail Crockett Johnson Contemporary Max Bill Martin and Erik Demaine Scott Draves Jan Dibbets John Ernest Helaman Ferguson Peter Forakis Susan Goldstine Bathsheba Grossman George W. Hart Desmond Paul Henry Anthony Hill Charles Jencks Garden of Cosmic Speculation Andy Lomas Robert Longhurst Jeanette McLeod Hamid Naderi Yeganeh István Orosz Hinke Osinga Antoine Pevsner Tony Robbin Alba Rojo Cama Reza Sarhangi Oliver Sin Hiroshi Sugimoto Daina Taimiņa Roman Verostko Margaret Wertheim
Theorists	Ancient Polykleitos Canon Vitruvius De architectura Renaissance Filippo Brunelleschi Leon Battista Alberti De pictura De re aedificatoria Piero della Francesca De prospectiva pingendi Luca Pacioli De divina proportione Leonardo da Vinci A Treatise on Painting Albrecht Dürer Vier Bücher von Menschlicher Proportion Sebastiano Serlio Regole generali d'architettura Andrea Palladio I quattro libri dell'architettura Romantic Samuel Colman Nature's Harmonic Unity Frederik Macody Lund Ad Quadratum Jay Hambidge The Greek Vase Modern Owen Jones The Grammar of Ornament Ernest Hanbury Hankin The Drawing of Geometric Patterns in Saracenic Art G. H. Hardy A Mathematician's Apology George David Birkhoff Aesthetic Measure Douglas Hofstadter Gödel, Escher, Bach Nikos Salingaros The 'Life' of a Carpet
Publications	Journal of Mathematics and the Arts Lumen Naturae Making Mathematics with Needlework Rhythm of Structure Viewpoints: Mathematical Perspective and Fractal Geometry in Art
Organizations	Ars Mathematica The Bridges Organization European Society for Mathematics and the Arts Goudreau Museum of Mathematics in Art and Science Institute For Figuring Mathemalchemy National Museum of Mathematics
Related	Droste effect Mathematical beauty Patterns in nature Sacred geometry
Category

v t e Mathematics in Iran
Mathematicians	Before 20th Century Abu al-Wafa' Buzjani Jamshid al-Kashi (al-Kashi's theorem) Omar Khayyam (Khayyam-Pascal's triangle, Khayyam-Saccheri quadrilateral, Khayyam's Solution of Cubic Equations) Al-Mahani Muhammad Baqir Yazdi Nizam al-Din al-Nisapuri Al-Nayrizi Kushyar Gilani Ayn al-Quzat Hamadani Al-Isfahani Al-Isfizari Al-Khwarizmi (Al-jabr) Najm al-Din al-Qazwini al-Katibi Nasir al-Din al-Tusi Al-Biruni Modern Maryam Mirzakhani Caucher Birkar Sara Zahedi Farideh Firoozbakht (Firoozbakht's conjecture) S. L. Hakimi (Havel–Hakimi algorithm) Siamak Yassemi Freydoon Shahidi (Langlands–Shahidi method) Hamid Naderi Yeganeh Esmail Babolian Ramin Takloo-Bighash Lotfi A. Zadeh (Fuzzy mathematics, Fuzzy set, Fuzzy logic) Ebadollah S. Mahmoodian Reza Sarhangi (The Bridges Organization) Siavash Shahshahani Gholamhossein Mosaheb Amin Shokrollahi Reza Sadeghi Mohammad Mehdi Zahedi Mohsen Hashtroodi Hossein Zakeri Amir Ali Ahmadi
Prize Recipients	Fields Medal Maryam Mirzakhani (2014) Caucher Birkar (2018) EMS Prize Sara Zahedi (2016) Satter Prize Maryam Mirzakhani (2013)
Organizations	Iranian Mathematical Society
Institutions	Institute for Research in Fundamental Sciences

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