• Casey's theorem, also known as the generalized Ptolemy's theorem, is a theorem in Euclidean geometry named after the Irish mathematician John Casey....
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  • Thumbnail for Feuerbach point
    theorem based on Casey's theorem on the bitangents of four circles tangent to a fifth circle was published by John Casey in 1866; Feuerbach's theorem...
    9 KB (1,129 words) - 03:55, 15 November 2024
  • Thumbnail for Ptolemy's theorem
    CD}}\end{aligned}}} Casey's theorem Intersecting chords theorem Greek mathematics C. Ptolemy, Almagest, Book 1, Chapter 10. Wilson, Jim. "Ptolemy's Theorem." link...
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  • flag theorem (Euclidean geometry) Butterfly theorem (Euclidean geometry) CPCTC (triangle geometry) Carnot's theorem (geometry) Casey's theorem (Euclidean...
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  • Thumbnail for Thébault's theorem
    the circumcircle, is found in Shay Gueron (2002). A proof based on Casey's theorem is in the paper. http://www.cut-the-knot.org/Curriculum/Geometry/Thebault1...
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  • Thumbnail for John Casey (mathematician)
    John Casey (12 May 1820, Kilbehenny, County Limerick, Ireland – 3 January 1891, Dublin) was a respected Irish geometer. He is most famous for Casey's theorem...
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  • Thumbnail for Pythagorean theorem
    In mathematics, the Pythagorean theorem or Pythagoras' theorem is a fundamental relation in Euclidean geometry between the three sides of a right triangle...
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  • Thumbnail for Bitangent
    connecting two pulleys, in Casey's theorem characterizing sets of four circles with a common tangent circle, and in Monge's theorem on the collinearity of...
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  • Thumbnail for List of circle topics
    chords are drawn Carnot's theorem – Theorem in Euclidean geometry Casey's theorem – On four non-intersecting circles that lie inside a bigger circle...
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  • Thumbnail for Problem of Apollonius
    Such a configuration is also the basis for Casey's theorem, itself a generalization of Ptolemy's theorem. The extension of Apollonius' problem to three...
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  • Thumbnail for List of lay Catholic scientists
    pioneering vascular suturing techniques John Casey (mathematician) (1820–1891) – Irish geometer known for Casey's theorem Giovanni Domenico Cassini (1625–1712)...
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  • Thumbnail for Law of cosines
    \beta .\end{aligned}}} The law of cosines generalizes the Pythagorean theorem, which holds only for right triangles: if ⁠ γ {\displaystyle \gamma } ⁠...
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  • and tangential components, which are orthogonal to each other. Siacci's theorem, formulated by the Italian mathematician Francesco Siacci (1839–1907),...
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  • example, Grimaldi's Pizzeria is a national chain with 47 locations, while Casey's is a Fortune 500 company with 2,500 locations despite almost exclusively...
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  • Thumbnail for Euclid's Elements
    These include Pythagorean theorem, Thales' theorem, the Euclidean algorithm for greatest common divisors, Euclid's theorem that there are infinitely many...
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  • of algebraic geometry are fundamental in Wiles's proof of Fermat's Last Theorem, a problem that was stated in terms of elementary arithmetic, and remained...
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  • Thumbnail for Lexell's theorem
    In spherical geometry, Lexell's theorem holds that every spherical triangle with the same surface area on a fixed base has its apex on a small circle...
    70 KB (9,234 words) - 14:52, 2 October 2024
  • – via scottaaronson.com. Ringbauer, Martin; Broome, Matthew A.; Myers, Casey R.; White, Andrew G.; Ralph, Timothy C. (19 June 2014). "Experimental simulation...
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  • Thumbnail for Curve-shortening flow
    shortening on a sphere can be used as part of a proof of the tennis ball theorem. This theorem states that every smooth simple closed curve on the sphere that...
    75 KB (9,389 words) - 10:32, 27 May 2025
  • Thumbnail for Nine-point circle
    Ford Award) give a proof of the Nine-Point Circle Theorem. Casey, John (1886). Nine-Point Circle Theorem, in A Sequel to the First Six Books of Euclid (4th ed...
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  • Thumbnail for Alexis Clairaut
    context, Clairaut worked out a mathematical result now known as "Clairaut's theorem". He also tackled the gravitational three-body problem, being the first...
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  • Thumbnail for Dave Franco
    Based on 'The Room'". Variety. June 9, 2014. Retrieved June 20, 2014. Coit, Casey (October 11, 2016). "Abbi Jacobson, Dave Franco and Jane Kaczmarek to Star...
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  • Thumbnail for Rogue wave
    the National Oceanography Centre in the United Kingdom, was quoted in Casey's book in 2010 as saying: "We don't have that random messy theory for nonlinear...
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  • Thumbnail for Lucas Hedges
    romance Labor Day (2013), and Terry Gilliam's science fiction film The Zero Theorem (2013). In 2014, Hedges had a minor role in Anderson's The Grand Budapest...
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  • the mix. Main Title (2:44) Genie Mopper (0:37) First Calculation (1:08) Theorem (0:42) Kick Ass Choir (0:59) Mystery Math (2:28) Them Apples (0:57) Jail...
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  • Thumbnail for Jeff Bennett
    Episode: "Gone With the Wand" Transformers: Robots in Disguise Axiom and Theorem Episode: "Brainpower" Wabbit Hubie and Bertie Episode: "Appropriate Technology"...
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  • Thumbnail for Golden ratio
    golden ratio with the Pythagorean theorem. Kepler said of these: Geometry has two great treasures: one is the theorem of Pythagoras, the other the division...
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  • Thumbnail for Philip W. Anderson
    can be localized by the presence of disorder in a system) and Anderson's theorem (concerning impurity scattering in superconductors); invented the Anderson...
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  • Thumbnail for Francesco Siacci
    and James Ingalls. Siacci also studied theoretical mechanics (Siacci's theorem, rigid body dynamics, canonical transformations, and inverse problems)...
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  • into a pictorial language". Then, as in noisy-channel model, we use Bayes theorem to get p ( x | y ) ∝ p ( y | x ) p ( x ) {\displaystyle p(x|y)\propto p(y|x)p(x)}...
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