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May
2
comment Piecewise bijection $f: \Bbb R \to (\Bbb R$ \ $ \{1\})$
@user129120 Wow, My bad! For some reason, I thought you were asking for a function $f:\mathbb R \setminus \{1\}\to \mathbb R$. However, Since the function I proposed is a bijection, its inverse is a function from $\mathbb R \to \mathbb R \setminus \{1\}$. Kind of a cheat but still!
May
1
comment Piecewise bijection $f: \Bbb R \to (\Bbb R$ \ $ \{1\})$
Is there a particular reason why you would need a piece-wise function? Then you could use $ \ f:x\to \frac 1{1-x}$.
Feb
26
revised Prove that $e ^ π$ > $π ^ e$.
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Feb
26
suggested approved edit on Prove that $e ^ π$ > $π ^ e$.
Oct
29
revised Epsilon-Delta Continuity proof
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Oct
29
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Oct
29
revised Basic Question on Gradients
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Sep
16
revised Duality principle in boolean algebra
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Sep
16
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Sep
16
reviewed Reviewed Duality principle in boolean algebra
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16
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Sep
9
asked A Proof relating to the Disjunctive normal form
Aug
11
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15
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9
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28
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May
10
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Apr
8
accepted Proving that these two fields $\mathbb Z_{11}[x]/〈 x^2+1〉$ and $\mathbb Z_{11}[x]/〈 x^2+x+4〉$ are isomorphic with $121$ elements each.
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26
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19
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