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Stack Exchange

Kenny Wong

Cambridge, United Kingdom

Data scientist at Featurespace.

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Top Questions
Top Answers
15
What is the purpose of defining a Hilbert Space?
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15
Does Cauchy's theorem's hold if we only assume boundedness?
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13
Aside from $5$, are all prime Fibonacci numbers also prime in $\mathbb{Z}[\phi]$?
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10
Show a curve is not a regular surface
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9
Construct homotopy from $(\alpha \cdot \beta) \cdot \gamma$ to $\alpha \cdot (\beta \cdot \gamma)$ explicitly
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9
Can Sturm-Liouville theory actually solve ODEs?
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8
How can SU(2) group has 3 dimensional representation?
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8
“Trivial” geometry behind the intersection pairing on surfaces
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7
Why does $f$ in $\int f(x)\, dx$ have to be continuous?
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7
Solving or approximating infinitely nested integral
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7
Local Degree of a map between n-spheres
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7
more intuitive definition of connectedness
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7
Show that if $f$ is differentiable then…
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7
Help understanding closed subschemes and closed immersions
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7
Explicit nowhere vanishing holomorphic volume form on quintic $3$-fold.
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7
Curvature of curve: equivalence between tangent vector and angle definitions
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6
Isometries of $\mathbb{S}^2$
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6
Example of an ideal $I$ that is maximal in $R$ but not maximal in $R[x].$
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6
Details of gluing sheaves on a cover
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6
What does notation $U^\boxplus$ mean (where $U$ is a vector space over $\mathbb{R}$ with an action of a Lie algebra on it)?
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6
Projectivization of a vector space: projective geometry definition vs algebraic geometry definition
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6
Compact operator on a Hilbert space
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6
Why is any prime factor of $(3)$ also a prime factor of $(2 + \sqrt[3]{19})$ in the ring of integers of $\mathbb{Q}(\sqrt[3]{19})$
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6
Find all entire functions with $f(z) = f(\frac{1}{z})$
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6
Why does “solvability” for groups suggest something about the solution of polynomials?
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6
Showing that a field extension is not simple
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6
Canonical divisor of the projective line
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6
$\mathbb{F}_{2^4}$ is not isomorphic to a subring of $\mathbb{F}_{2^5}$
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5
Linearly independence and Smooth Local Section
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5
Proving that the space of bounded linear operators is complete
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