Josué Molina

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1,205 reputation

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bio	website	molinajosue.blogspot.com
	location	Houston, TX
	age	23
visits	member for	1 year, 3 months
	seen	Apr 19 at 13:22
stats	profile views	211

God can be found in just about anything you decide to venture into—including mathematics.

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96 Questions

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8	If $A$ is compact, is then $f(A)$ compact?
6	Solving a System of Equations of the form $\sum x^k = C$
5	Pointwise Convergence on an Infinite Intersection of Function Images
5	Uniform Convergence of an Exponential Sequence of Functions
5	Show that $a^6-1$ is divisible by $168$ whenever $(a,42)=1$.

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1,205 Reputation

+5	If $A$ is compact, is then $f(A)$ compact?
+10	Proving a Theorem about Perfect Numbers
+5	Find all positive integers $n$ such that $\phi(n)=6$.
+5	Integrating $\int_{\Gamma:\|z\|=1}\frac{e^z-1-z}{z^2}dz$, where $z\in\mathbb{C}$.

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8 Answers

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5	Question about the $\epsilon-\delta$ definition of continuity of function
5	What do the $+,-$ mean in limit notation, like$\lim\limits_{t \to 0^+}$ and $\lim\limits_{t \to 0^-}$?
3	If $x$ is in $A$ then is $\{x\}$ an element of the power set $A$ or a subset of the power set of $A$?
3	Can I prove (if $n^2$ is even then $n$ is even) directly?
1	Short forms like “haven't”, “don't”, “let's”

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34 Tags

10 limit × 2	3 elementary-set-theory
5 real-analysis × 31	3 proof-writing
5 calculus × 4	3 proof-strategy
5 notation × 3	1 differential-equations × 4
3 elementary-number-theory × 29	1 terminology

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4 Accounts

$Mathematics Stack Exchange$	Mathematics	1,205 rep	318
	Stack Overflow	250 rep	110
	Physics	113 rep	4
	Programmers	101 rep	1

19 Badges

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Popular Question × 3	Caucus
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