Welcome to my page/profile on Math.StackExchange.com

**Presentation for laypeople and enthusiasts of mathematics:**

*In this forum, the quality of questions and answers is endorsed by a system for evaluating the respective questions and answers of participants based on scores. The scores provide a ranking of the reputation of active participants. This forum has the participation of both mathematical enthusiasts in general and senior researchers from the world's most renowned mathematics research centers.*

**Presentation for the public that already knows Math.StackExchange.com:**

*I have a predilection for unusual relationships between theorems.*

*I like to discover elegant proofs in unconventional ways*

*Naive questions are a great opportunity to share knowledge.*

*The accuracy is inherent in mathematics.*

How to prove that a compact set in a Hausdorff topological space is closed?

how to prove $(-1)\cdot(-1)=1$ based only on the field axioms?

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

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Niels Bohr
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"A good stack of examples, as large as possible, is indispensable for a thorough understanding of any concept, and when I want to learn something new, I make it my first job to build one."

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Paul Halmos
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"Information: the negative reciprocal value of probability."

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Claude Shannon
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