user424241

# 47 Questions

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### Calculate the multiplicity at the origin of the intersection of the $X=V(xy^2+x^4)$ and $Y=V(x^2y-x^4)$ curves.

Aug 6 at 21:11 user424241 272
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### Show that $[\mathbb{Q}(\sqrt[4]{2}, \sqrt{3}):\mathbb{Q}]=8$

Sep 4 '17 at 3:28 user424241 272
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### What is the probability of drawing a spade again if I already have $4$?

Sep 4 '18 at 19:35 user424241 272
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### Prove that if $A$ is diagonally dominant and if $Q$ is chosen as in the Jacobi method, then $\rho(I-Q^{-1}A)<1$

Apr 22 '18 at 0:27 user424241 272
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### Let $f:\mathbb{R}^3\to \mathbb{R}^2$ be of class $C^1$; write $f$ in the form $f(x, y_1, y_2)$. Assume that $f(3, -1, 2)=0$ and

Feb 17 '18 at 2:41 user424241 272
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### For which $u$ does the derivative $f'(u,0)$ of $f(x,y)=|xy|^{1/2}$ exist?

Dec 13 '17 at 1:19 user424241 272
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### Check solutions to four integrals of holomorphic functions

Nov 19 '17 at 19:37 Did 252k
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### For each short eaxct sequence $0\to B\to C\to D\to 0$ there is a naturally associated exact sequence…

Aug 13 at 19:17 user424241 272
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### Find a star convex set that is not convex.

Feb 10 at 6:32 Mfs 11
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### Test the following identities of the vector analysis, for fields $F, G: \mathbb{R}^3→ \mathbb{R}^3$ and functions $f, g: \mathbb{R}^3 → \mathbb{R}$.

Nov 18 at 9:22 Fakemistake 1,990
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