Guillermo
Reputation
1,054
Top tag
Next privilege 2,000 Rep.
3 18
Impact
~9k people reached

# 54 Questions

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205
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286
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92
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68
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### $R$ : a ring with unity, $a^2x=a$. Show that $ax=xa$.

oct 8 '13 at 14:13 Guillermo 1,054
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4
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68
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301
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125
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163
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44
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3
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772
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3
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57
views

3
0
80
views

### Tangent bundle of a surface is a manifold

jun 19 '13 at 8:51 Guillermo 1,054
2
3
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242
views

### primes of the form $p=8k+1, 8k+3$ can be expressed as $p=a^2+2b^2$

may 15 '13 at 23:18 JohnWO 793
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113
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3
80
views

2
0
24
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### Calderón reproducing formula : $\int_{0}^{\infty}\int_{R^d}|\phi_{t}(x-y)||(\phi_t*f)(y)|\frac{dt}{t}dy<\infty$

aug 14 at 19:45 Guillermo 1,054
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73
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2
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27
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133
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