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Graduate student trying to learn something.


Jul
22
reviewed Approve suggested edit on What's wrong with my aproach to solving this equation with multiple logarithms?
Jul
22
comment Show a smooth map from a compact, connected, orientable surface to a cyllinder has singular derivative at 2 points.
@DanValenzuela I meant $f(M)$ is both open and closed in $N$, obviously.
Jul
22
comment Show a smooth map from a compact, connected, orientable surface to a cyllinder has singular derivative at 2 points.
@DanValenzuela Huh? Compact subsets of Hausdorff spaces are closed. I don't understand what you are complaining about.
Jul
22
accepted Show a smooth map from a compact, connected, orientable surface to a cyllinder has singular derivative at 2 points.
Jul
22
comment Show a smooth map from a compact, connected, orientable surface to a cyllinder has singular derivative at 2 points.
Ah, very nice solution.
Jul
22
revised Show a smooth map from a compact, connected, orientable surface to a cyllinder has singular derivative at 2 points.
edited tags
Jul
22
asked Show a smooth map from a compact, connected, orientable surface to a cyllinder has singular derivative at 2 points.
Jul
18
accepted Is there a nonempty open bounded subset of plane whose boundary contains no 1 dimensional interval?
Jul
17
accepted Do differentiable functions preserve measure zero sets? Measurable sets?
Jul
16
awarded  Nice Question
Jul
16
asked Do differentiable functions preserve measure zero sets? Measurable sets?
Jul
10
awarded  Citizen Patrol
Jul
2
awarded  Curious
Jun
18
awarded  Fanatic
Jun
17
reviewed Approve suggested edit on Sum of consecutive square roots inside a square root
Jun
16
reviewed Approve suggested edit on Finding all roots of $z^4-4z^3+9z^2-4z+8$
Jun
15
reviewed Approve suggested edit on Query regarding Linear Transformation…
Jun
15
reviewed Reject suggested edit on Under what conditions the kernel and image of a linear bundle map are subbundles?
Jun
15
reviewed Approve suggested edit on The “trick” functions in the “$\pi$ is transcendental” proofs
Jun
12
comment Convergence of infinite series involving $\frac{\sin(x)}x$.
Can you explain the bound by 1/sin(1/2)?