James S. Cook

2,751 reputation

113

bio	website	supermath.info
	location	Virgina USA
	age	34
visits	member for	9 months
	seen	9 hours ago
stats	profile views	374

I'm interested in mathematics which is used to frame physical theory. I guess that means I'm at least a little interested in just about anything. Currently I'm trying to find a good open question to attack.

	2,751 reputation	bio	website	supermath.info	visits	member for	9 months
113 badges		location	Virgina USA		seen	9 hours ago

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115 Answers

votes activity newest

8	What is the easiest way to integrate $\left(\frac{1-x}{1+x}\right)^{1/2}?$
7	Proof of derivative of $e^x$ is $e^x$ without using chain rule
5	Why is it okay to say two groups are the same, when they're really isomorphic?
5	Find whether or not an inverse exists algebraically
5	An operator $T:\mathbb{R}^4\to \mathbb{R}^4$ such that $T$ has no (real) eigenvalues.

2,751 Reputation

+20	Does this ODE have an exact or well-established approximate analytical solution?
+10	Help with algebraic manipulation to prove that $\Omega (M)$ constructed from $\Omega^1 (M)$ forms an algebra over $C^\infty (M)$
+10	Proof of Cauchy Riemann Equations in Polar Coordinates
+15	non-vanishing k-form on a k-manifold in $\mathbb{R}^n$ implies orientability

9 Questions

votes activity newest

11	history of the double root solution of $ay''+by'+cy=0$
4	is there a better classification of a desirable algebra?
4	is this a wave equation?
4	nonstandard example of smooth function which fails to be analytic on $\mathbb{R}$
4	PDEs of higher order than three?

73 Tags

31 calculus × 16	14 soft-question × 4
30 linear-algebra × 24	12 integral × 4
20 differential-equations × 18	11 abstract-algebra × 7
15 multivariable-calculus × 14	9 real-analysis × 6
15 differential-geometry × 8	9 riemannian-geometry × 5