# Josué Molina

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bio website molinajosue.blogspot.com location Houston, TX age 24 member for 2 years seen Feb 28 at 17:27 profile views 307

One Thousand Birds

# 445 Actions

 Jul23 asked The union of a sequence of countable sets is countable. Jul22 accepted Fourier Series Definition Question Jul22 accepted The union of a sequence of infinite, countable sets is countable. Jul22 comment Every infinite subset of a countable set is countable. I like this. :-) Thank you! Jul22 accepted Every infinite subset of a countable set is countable. Jul22 asked Every infinite subset of a countable set is countable. Jul20 accepted Theorem 2.13 in Walter Rudin's Principles of Mathematical Analysis Jul20 comment Theorem 2.13 in Walter Rudin's Principles of Mathematical Analysis Thank you for the clarification! That makes sense. For a moment there, I thought that with equivalent he meant equal. Jul20 asked Theorem 2.13 in Walter Rudin's Principles of Mathematical Analysis Jul19 comment The union of a sequence of infinite, countable sets is countable. @HagenvonEitzen, how did you conclude that $\mathbb N\to S$? Jul19 asked The union of a sequence of infinite, countable sets is countable. Jul18 revised How many members are in a club? added 126 characters in body Jul18 answered How many members are in a club? Jul18 comment What is $a$ in $F(x)=\int_a^xf(t)\,dt$? Thank you for providing me with the clarification I was looking for! Jul18 accepted What is $a$ in $F(x)=\int_a^xf(t)\,dt$? Jul17 comment black and white balls in the box Here is the program, if interested: gist.github.com/molinaw1/6022501 Jul17 comment black and white balls in the box I wrote a program that simulates this problem, and after millions of runs, I always ended up with a black ball. +1 Jul17 revised What is $a$ in $F(x)=\int_a^xf(t)\,dt$? I just fixed a typo in the title. Jul17 comment What is $a$ in $F(x)=\int_a^xf(t)\,dt$? I am sorry; I just fixed the typo. Jul17 asked What is $a$ in $F(x)=\int_a^xf(t)\,dt$?