Ryan Budney

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13,326 reputation
32356
bio website rybu.org
location Victoria, Canada
age 39
visits member for 2 years, 9 months
seen 2 hours ago
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I am a professor of mathematics at the University of Victoria, in Canada.


166 Answers

newest activity votes
139
Why can you turn clothing right-side-out?
107
Why can you turn clothing right-side-out?
33
How is $\mathbb{C}$ different than $\mathbb{R}^2$?
28
How to study math to really understand it and have a healthy lifestyle with free time?
21
What's more general than category theory?
20
What's the point of studying topological (as opposed to smooth, PL, or PDiff) manifolds?
18
Quotient geometries known in popular culture, such as “flat torus = Asteroids video game”
17
Why do statements which appear elementary have complicated proofs?
15
is triangle a manifold?
14
Examples of manifolds that cannot be embedded in $\mathbb R^4$
13
How can I lift a path to $\mathrm{Spin}(n)$?
13
String Theory: What to do?
13
Teaching mathematics in intuitive and thought provoking way
12
Find the average of $\sin^{100} (x)$ in 5 minutes?
12
What is $\pi_i(GL(n))$?
12
$C^\infty$ vs. $C^\omega$ surfaces
12
Why are knot invariants best organized as polynomials?
12
Poincare Duality Reference
12
Why the interest in locally Euclidean spaces?
12
On the Math Mindset
11
Surface where number of coordinate charts in atlas has to be infinite
11
Why is the Jordan Curve Theorem not “obvious”?
11
Why is one “$\infty$” number enough for complex numbers?
10
Is there a good “bridge” between high school math and the more advanced topics?
10
How useless can the Mayer-Vietoris sequence be in general?
10
The Strong Whitney Embedding Theorem-Any Recommended Sources?
10
Tangent Bundle and its (Isomorphic?) Dual Bundle
9
Are these equivalent characterizations of closed manifolds?
9
Why every smooth orientable 4-dimensional manifold admits an immersion into $\mathbb{R}^{6}$?
9
Why does every 7-manifold bound an 8-manifold?
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