Leonardo
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 Nov 27 accepted What, if anything, does it mean to be neither finite nor infinite for real numbers? Oct 20 accepted Tallest bubble tower induction proof Aug 12 accepted How do I know what to substitute to simplify a limit? Aug 9 accepted What is another, perhaps quicker and nicer way of solving this question? Jul 22 accepted How would you interpret this question focusing on problem solving? Jul 8 accepted Finding points of intersection between a line and a curve Apr 10 accepted How can I determine the values of a third point to make all 3 collinear in $\mathbb{R}^3$ Apr 7 accepted What does it mean to be proportional to something? Apr 6 accepted Find all values of $a$ such that $w = ai- \frac{a}{3}j$ is a unit vector Apr 6 accepted Solve binomial expression with a variable under a square root? Mar 12 accepted How might one go about proving this poorly worded theorem about divisibility with the number 3? Mar 1 accepted Is this a correct proof for this relation? Feb 27 accepted Can we have a matrix whose elements are other matrices as well as other things similar to sets? Feb 26 accepted Is the relation on the positive integers defined by $(x,y) \in R$ if $x = y^2$ only antisymmetric? Feb 23 accepted Does there exist any elements which I can add to a Relation such that the Relation remains Sym/Anti, Trans, and Reflexive? Feb 19 accepted Prove that $f(n) = n^2 - 1$ is not injective and not surjective. Am I doing it right? Feb 5 accepted How does one select some $i$ to prove $\exists i$ s.t. $s_i \leq A$ where $A$ is the average of real numbers $(s_1 + s_2 + . . . + s_n) / n$ Feb 5 accepted Prove $x \in \mathbb{Q}$ and $y \notin \mathbb{Q} \implies (x + y) \notin \mathbb{Q}$ Jan 26 accepted How would one prove that $\sqrt{n}$ is the largest divisor that needs to be checked to determine if $n$ is prime? Jan 25 accepted If I am checking for $s$ divides $n$ on the interval $S = [3, n-x]$, how large can I make $x$ to ensure I have verified $n$ is prime?