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network profile
| bio | website | |
|---|---|---|
| location | ||
| age | ||
| visits | member for | 4 months |
| seen | 7 hours ago | |
| stats | profile views | 520 |
|
8h |
reviewed | No Action Needed Selecting a representative permutation |
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13h |
comment |
Trisect unknown angle using pencil, straight edge & compass; Prove validity of technique @RishiSharma: The problem is not to approximate a trisection of an angle, it is to actually trisect the angle. |
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13h |
comment |
Trisect unknown angle using pencil, straight edge & compass; Prove validity of technique Without a picture this is incomprehensible, nevermind that it contradicts a theorem that's been known for almost 200 years. |
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13h |
reviewed | Leave Open Can it be confirmed in this state when state transition probability >= 25% |
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13h |
reviewed | Reviewed Trisect unknown angle using pencil, straight edge & compass; Prove validity of technique |
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1d |
reviewed | Close Which topics of mathematics should I study? |
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1d |
comment |
combinations and permutation questions 4 close votes and not a single person left a comment about why? |
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1d |
reviewed | Leave Open combinations and permutation questions |
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1d |
reviewed | No Action Needed If $d(x,A)=0\forall x\in X$ for some subset $A$ of $X$, does it follow that $A$ is dense? |
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1d |
reviewed | Leave Open Embedded Lp spaces |
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1d |
reviewed | Close $Z(GL_n(\mathbb R)) = \{aI : a\neq0\} $ |
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1d |
reviewed | Leave Open $\hom(U, V)=U^*\otimes V$ |
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1d |
reviewed | Reviewed formula of pascal's triangle |
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2d |
comment |
a flatness criterion +1 The only thing I would be careful about is that in general $A \otimes N \to A \otimes M$ being injective does not imply that $\operatorname{Tor}_1^R(A, M/N) = 0$. In this case it follows because $M = R$ is free but it's a little sneaky to say that this is "by assumption" ;) |
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2d |
comment |
Computing the order, inverse, and parity of a permutation Hint: Start by writing the cycle decomposition of your permutation. For example you can check that $2 \to 3$ and $3 \to 2$ so $(2 \ 3)$ will be one cycle. |
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2d |
comment |
a flatness criterion Good luck :) Before resorting to Tor I thought briefly about if there was an elementary way of doing this and didn't come up with anything. It must be possible though. |
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2d |
answered | a flatness criterion |
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2d |
reviewed | Leave Closed Partial Solution to the Twin Primes Conjecture — What does it imply? |
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2d |
reviewed | Reject suggested edit on How to solve this minimization problem? |
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2d |
reviewed | Reject suggested edit on Fourier representation for $\tan(x)$ |
