Leonardo
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 Nov27 accepted What, if anything, does it mean to be neither finite nor infinite for real numbers? Oct20 accepted Tallest bubble tower induction proof Aug12 accepted How do I know what to substitute to simplify a limit? Aug9 accepted What is another, perhaps quicker and nicer way of solving this question? Jul22 accepted How would you interpret this question focusing on problem solving? Jul8 accepted Finding points of intersection between a line and a curve Apr10 accepted How can I determine the values of a third point to make all 3 collinear in $\mathbb{R}^3$ Apr7 accepted What does it mean to be proportional to something? Apr6 accepted Find all values of $a$ such that $w = ai- \frac{a}{3}j$ is a unit vector Apr6 accepted Solve binomial expression with a variable under a square root? Mar12 accepted How might one go about proving this poorly worded theorem about divisibility with the number 3? Mar1 accepted Is this a correct proof for this relation? Feb27 accepted Can we have a matrix whose elements are other matrices as well as other things similar to sets? Feb26 accepted Is the relation on the positive integers defined by $(x,y) \in R$ if $x = y^2$ only antisymmetric? Feb23 accepted Does there exist any elements which I can add to a Relation such that the Relation remains Sym/Anti, Trans, and Reflexive? Feb19 accepted Prove that $f(n) = n^2 - 1$ is not injective and not surjective. Am I doing it right? Feb5 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 $(s_1 + s_2 + . . . + s_n) / n$ Feb5 accepted Advice? homework: $\forall x,y \in \mathbb{R}, x \in \mathbb{Q} \land y \notin \mathbb{Q} \implies (x + y) \notin \mathbb{Q}$ Jan26 accepted How would one prove that $\sqrt{n}$ is the largest divisor that needs to be checked to determine if $n$ is prime? Jan25 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?