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An expert is a man who has made all the mistakes, which can be made, in a very narrow field. (Niels Bohr)


Jul
24
comment Banach Fixed Point Theorem. Measurable version.
@Ilya Sorry about the absence. But I have to go now. I'll think about it.
Jul
24
revised Banach Fixed Point Theorem. Measurable version.
added 27 characters in body
Jul
24
comment Banach Fixed Point Theorem. Measurable version.
@PhoemueX, $L$ is a fixed constant. I add it now.
Jul
24
comment Banach Fixed Point Theorem. Measurable version.
@Ilya Yes, the statement is valid for dirac measure or perturbation of the Dirac measure. I'm still thinking about it.
Jul
24
revised Banach Fixed Point Theorem. Measurable version.
added 15 characters in body
Jul
24
comment Banach Fixed Point Theorem. Measurable version.
@Ilya My mistake, I forgot to put the hypothesis of continuity. With hiótese the existence of continuity follows easily from other fixed point theorems. I'll add the hypothesis of the continuity issue. My interest is in the uniqueness of the fixed point.
Jul
24
asked Banach Fixed Point Theorem. Measurable version.
Jul
24
revised Generalization of Banach's fixed point theorem
Changing the type " ->" suitable latex code: \ to
Jul
17
reviewed Close Prove that the cyclic group of order 3 is a group with a proof and justification
Jul
17
reviewed Looks OK An Inequality about power numbers
Jul
17
reviewed Reject suggested edit on A series with only rational terms for $\ln \ln 2$
Jul
13
reviewed Approve suggested edit on Taylor Series for $(1-x)^p$
Jul
13
revised Percolation and number of phases in the 2D Ising model.
Correction of mistakes in writing.
Jul
12
revised Different methods to compute $\sum\limits_{n=1}^\infty \frac{1}{n^2}$
added 2 characters in body
Jul
12
awarded  Necromancer
Jul
11
revised $ d(x,y)^2 \le d(x,z)^2 - d(y,z)^2\color{}{+\varphi\big(x,y,z,d(x,y),d(y,z) \big)}? $
added 750 characters in body; edited tags
Jul
10
asked $ d(x,y)^2 \le d(x,z)^2 - d(y,z)^2\color{}{+\varphi\big(x,y,z,d(x,y),d(y,z) \big)}? $
Jul
8
revised On a topological proof of the infinitude of prime numbers.
added 9 characters in body
Jul
8
awarded  Popular Question
Jul
2
awarded  Curious