Eric O. Korman

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Graduate student in mathematics.


165 Answers

newest activity votes
25
Conjectures that have been disproved with extremely large counterexamples?
15
Are $x \cdot 0 = 0$, $x \cdot 1 = x$, and $-(-x) = x$ axioms?
14
Surprising Generalizations
11
What should be in every grad student's library?
10
Do all representations of finite groups have one-dimensional subrepresentations?
10
$\Omega=x\;dy \wedge dz+y\;dz\wedge dx+z\;dx \wedge dy$ is never zero when restricted to $\mathbb{S^2}$
10
How do I measure distance on a globe?
10
Good Physical Demonstrations of Abstract Mathematics
9
Why is the orthogonal group $\operatorname{O}(2n,\mathbb R)$ not the direct product of $\operatorname{SO}(2n, \mathbb R)$ and $\mathbb Z_2$?
9
Intuitive explanation of covariant, contravariant and Lie derivatives
8
If $A$ is a subobject of $B$, and $B$ a subobject of $A$, are they isomorphic?
8
Why is $\operatorname{Spin}(3) \cong \operatorname{SU}(2)$?
8
Best Algebraic Topology book/Alternative to Allen Hatcher free book?
8
What sort of mathematical methods and models are used to model the brain
8
Intuition behind $dx \wedge dy=-dy \wedge dx$
7
every map can be replaced by a weakly equivalent fibration
7
How to prove that a conditionally convergent series can be rearranged to sum to any real number?
7
isomorphism and $id$
7
Why are $3D$ transformation matrices $4 \times 4$ instead of $3 \times 3$?
6
What's so “natural” about the base of natural logarithms?
6
Is the vector cross product only defined for 3D?
6
Show the existence of a polynomial $f$ such that $T^{-1} = f(T)$ for an invertible linear operator $T.$
6
Lie algebras from differentiation
6
Approach to Learning Co/Homology
6
Does the group of Diffeomorphisms act transitively on the space of Riemannian metrics?
6
Fundamental group of the special orthogonal group SO(n)
6
What is the second stiefel whitney class of SO(n)?
6
Varying definitions of cohomology
6
Card doubling paradox
5
Mechanics of a direct sum mod a direct sum
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