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My glass of coffee that I sketched while waiting on a friend. I was fascinated by how the reflection of the napkin mapped onto the glass.
#coffee#projectivegeometry#sketchespic.twitter.com/pWTBDQrrGV
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Just started on my next series of problem solutions. This one is for the book Multiple View Geometry in Computer Vision. Challenging but exciting! Index to the solutions: http://blog.immenselyhappy.com/post/mvg-sol-i … Chapter 2 solutions: http://blog.immenselyhappy.com/post/mvg-sol-2
#ComputerVision#ProjectiveGeometry -
of the Hesse Transfer Principle in Richter-Gebert's Perspectives on Projective Geometry.
@geogebra#projectivegeometry 2/2Prikaži ovu nit -
Spending Sunday afternoon making conic sections via the intersections of two projective (non-perspective) pencils of points.
#projectivegeometry pic.twitter.com/BdsHo3lM8g
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The real projective line is a circle, while the complex projective line is a sphere.
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As part of my
#computervision journey, I've started compiling a solution manual to the excellent book "Introduction to Projective Geometry" by C. R. Wylie Jr. at https://blog.immenselyhappy.com/post/pg-sol-index/ …. I hope it helps a fellow traveller on their way.#projectivegeometry -
The points of the real projective line are lines through the origin in the real number plane. The point at infinity is, for convenience, either the vertical axis or the horizontal axis.
#projectivegeometry -
The real projective plane PG(2,R) is equivalent to R^2 together with the line at infinity L. The line at infinity L, and all lines in PG(2,R), are equivalent to PG(1,R), the real projective line, which is topologically a circle.
#projectivegeometry -
If you like this and would like to make it rigorous, learn
#ProjectiveGeometry! Founded by artists, studied by mathematicians, applied by physicists and internet security protocols. https://en.wikipedia.org/wiki/Flagellation_of_Christ_(Piero_della_Francesca) … -
My undergrad student devised a simple but interesting way to construct analytically a projective plane over the ring Z4 of integers modulo 4, including its completion from the affine plane Z4^2.
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Desargues’ Theorem shows a married couple with three children.
#mathematics#projectivegeometry -
Some of my favourites (so far all of which have been very good!) Some are v thin e.g. Mazur, Arnold, but all excellent.
#SpherePacking#DynamicalSystems#AlgebraicTopology#GaloisFields#ProjectiveGeometry#GianCarloRota#RiemannHypothesis#combinatoricspic.twitter.com/WIJy6FRvm2
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The shortest arc between two points on a sphere is created by a plane that intersects those two points and the center of the sphere. Notice that it’s a sphere
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Now, one can play with
#ProjectiveGeometry using the#Isabelle theorem prover. https://www.isa-afp.org/entries/Projective_Geometry.html …
Čini se da učitavanje traje već neko vrijeme.
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