• Thumbnail for Candido's identity
    IDENTITIES". In: Fibonacci Quarterly, Volume 55, No. 5, 2017, pp. 46–51 Claudi Alsina, Roger B. Nelsen: "On Candido's Identity". In: Mathematics Magazine...
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  • geometry for a popular audience. It was written by Roger B. Nelsen and Claudi Alsina, and published by the Mathematical Association of America in 2011 as...
    3 KB (266 words) - 18:52, 15 September 2024
  • Thumbnail for Carnot's theorem (inradius, circumradius)
    is used in a proof of the Japanese theorem for concyclic polygons. Claudi Alsina, Roger B. Nelsen: When Less is More: Visualizing Basic Inequalities...
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  • Thumbnail for Pythagorean theorem
    applications: with 150 figures (3rd ed.). Springer. p. 23. ISBN 0-387-94222-X. Claudi Alsina, Roger B. Nelsen: Charming Proofs: A Journey Into Elegant Mathematics...
    92 KB (12,566 words) - 06:51, 6 September 2024
  • Thumbnail for Ptolemy's theorem
    Ptolemy's Theorem, The College Mathematics Journal, v.43, n.5, p. 386. Alsina, Claudi; Nelsen, Roger B. (2010), Charming Proofs: A Journey Into Elegant Mathematics...
    27 KB (4,921 words) - 18:05, 5 October 2024
  • Thumbnail for Antoni Gaudí
    Torres García. Builders and foremen: Agustí Massip, Josep Bayó i Font, Claudi Alsina i Bonafont, Josep Pardo i Casanova and his nephew Julià Bardier i Pardo...
    134 KB (16,766 words) - 16:56, 13 October 2024
  • Thumbnail for Japanese theorem for cyclic polygons
    the original (PDF) on 24 October 2018. Retrieved 2 September 2015. Claudi Alsina, Roger B. Nelsen: Icons of Mathematics: An Exploration of Twenty Key...
    5 KB (472 words) - 20:57, 1 October 2024
  • archive.org.) When Less is More: Visualizing Basic Inequalities. By Claudi Alsina, Roger B. Nelse. Pg 18. The elements of geometry. By William Emerson...
    99 KB (11,512 words) - 04:54, 10 October 2024
  • Thumbnail for Viviani's theorem
    203–211. arXiv:0903.0753. doi:10.4169/074683410X488683. S2CID 118912287. Claudi Alsina, Roger B. Nelsen: Charming Proofs: A Journey Into Elegant Mathematics...
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  • }(x)=(1-x)^{p}.} The family of Aczél–Alsina t-norms, introduced in the early 1980s by János Aczél and Claudi Alsina, is given for 0 ≤ p ≤ +∞ by T p A A...
    20 KB (3,677 words) - 08:01, 23 April 2023
  • Thumbnail for Weitzenböck's inequality
    page 64. Claudi Alsina, Roger B. Nelsen: When Less is More: Visualizing Basic Inequalities. MAA, 2009, ISBN 9780883853429, pp. 84-86 Claudi Alsina, Roger...
    8 KB (1,416 words) - 11:30, 20 May 2024
  • Thumbnail for Median triangle
    Euclidean Geometry. Dover 2007, ISBN 978-0-486-46237-0, pp. 282–283 Claudi Alsina, Roger B. Nelsen: Charming Proofs: A Journey Into Elegant Mathematics...
    2 KB (137 words) - 23:11, 4 September 2024
  • Thumbnail for Casa Vicens
    the carpenter Eudald Puntí and the blacksmith Joan Oñós, as well as Claudi Alsina, a contractor. The decoration was carried out by the painter Francesc...
    75 KB (10,248 words) - 17:54, 15 September 2024
  • Thumbnail for Van Schooten's theorem
    last equation by a {\displaystyle a} delivers Van Schooten's theorem. Claudi Alsina, Roger B. Nelsen: Charming Proofs: A Journey Into Elegant Mathematics...
    2 KB (275 words) - 09:43, 14 March 2023
  • Thumbnail for Equilateral triangle
    Harwood & Herring (2002), p. 413–414, See Table 11.1. Whyte (1952). Alsina, Claudi; Nelsen, Roger B. (2010). Charming Proofs: A Journey Into Elegant Mathematics...
    25 KB (2,756 words) - 05:38, 15 October 2024
  • Cambridge Philosophical Society, volume 38, part 4, page 397, 1943. Claudi Alsina, Roger B. Nelsen: When Less is More: Visualizing Basic Inequalities...
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  • Books of the Elements, vol. 3, Cambridge University Press, p. 268. Alsina, Claudi; Nelsen, Roger B. (2015), A Mathematical Space Odyssey: Solid Geometry...
    17 KB (1,639 words) - 14:54, 2 September 2024
  • Thumbnail for Taylor circle
    ^{2}\gamma }}} List of circle topics Tucker circles Lemoine Circle Claudi Alsina, Roger B. Nelsen: Icons of Mathematics. An Exploration of Twenty Key...
    2 KB (257 words) - 03:51, 17 September 2024
  • Thumbnail for Commandino's theorem
    in the centroid of the quadrilateral and are divided in half by it. Claudi Alsina, Roger B. Nelsen: A Mathematical Space Odyssey: Solid Geometry in the...
    7 KB (967 words) - 02:20, 20 July 2024
  • Thumbnail for Pappus's area theorem
    2007, ISBN 9780691125268, pp. 58–59 (excerpt, p. 58, at Google Books) Claudi Alsina, Roger B. Nelsen: Charming Proofs: A Journey Into Elegant Mathematics...
    4 KB (539 words) - 07:11, 6 May 2023
  • Thumbnail for Quadratrix of Hippias
    Volume 1: From Thales to Euclid, Clarendon Press, pp. 182, 225–230 Claudi Alsina, Roger B. Nelsen: Charming Proofs: A Journey Into Elegant Mathematics...
    15 KB (1,958 words) - 06:33, 12 May 2024
  • Thumbnail for Newton line
    Complete quadrangle Newton's theorem (quadrilateral) Newton–Gauss line Alsina, Claudi; Nelsen, Roger B. (2010). Charming Proofs: A Journey Into Elegant Mathematics...
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  • which is an inner point of the quadrilateral, the area identity holds. Alsina, Claudi; Nelsen, Roger B. (2020). A Cornucopia of Quadrilaterals. American Mathematics...
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  • Thumbnail for Quadrilateral
    Wolters–Noordhoff Publishing, The Netherlands, 1969, pp. 129, 132. Alsina, Claudi; Nelsen, Roger (2009), When Less is More: Visualizing Basic Inequalities...
    48 KB (6,876 words) - 11:23, 23 September 2024
  • 2021. triangular polyominoes (or triangular polyforms, or polyiamonds) Alsina, Claudi; Nelsen, Roger B. (31 December 2015). A Mathematical Space Odyssey:...
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  • Thumbnail for Mrs. Miniver's problem
    Miniver problem", The Mathematical Magpie, Simon & Schuster, pp. 298–300 Alsina, Claudi; Nelsen, Roger B. (2011), "11.8: Mrs. Miniver's problem", Icons of Mathematics:...
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  • Thumbnail for Prismatoid
    William F.; Bland, James R. (1938). Solid Mensuration with proofs. p. 75. Alsina, Claudi; Nelsen, Roger B. (2015). A Mathematical Space Odyssey: Solid Geometry...
    5 KB (393 words) - 14:58, 26 May 2024
  • Thumbnail for Newton's theorem (quadrilateral)
    {1}{2}}rb+{\frac {1}{2}}rd\\&=A(\triangle PBC)+A(\triangle PAD).\end{aligned}}} Alsina, Claudi; Nelsen, Roger B. (2010). Charming Proofs: A Journey Into Elegant Mathematics...
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  • Thumbnail for Pythagoras in popular culture
    Association of America, pp. 295–298, ISBN 978-0-88385-555-3. See also Alsina, Claudi; Nelsen, Roger B. (2010), Charming proofs: a journey into elegant mathematics...
    4 KB (375 words) - 06:41, 25 July 2024
  • Thumbnail for Wedge (geometry)
    Computational Science. New York: Springer. p. 102. ISBN 978-0-387-94746-4. Alsina, Claudi; Nelsen, Roger B. (2015), A Mathematical Space Odyssey: Solid Geometry...
    4 KB (323 words) - 22:14, 21 August 2024