*The author gives a visual proof of the Pythagorean Theorem.*

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*The author gives a visual proof of the Pythagorean Theorem.*

*The author presents a geometric interpretation of Leibniz`s rule for differentiating under the integral sign, and gives an informal visual derivation of the rule. *

*Using basic linear algebra, the authors obtain a complete, easy to compute, winning strategy for the \(4 \times 4\) mini `Lights Out` game.*

*The Theorem “An infinite group is cyclic when each of its nonidentity subgroups have finite index” is proved and discussed, and a test to show groups are not cyclic is ...*

*The author gives a proof of the title as an application of Lagrange`s Theorem, allowing the theorem to be presented in the first semester of an undergraduate abstract algebra course.*

*A visual representation of the title is presented.*

*The author provides a combinatorial explanation of a `striking`result from Herbert Wilf`s book “generatingfunctionology” , equating the likelyhood of certain permutations with the...*

*Every integer can be expressed in base \(2\) using the set \(\{-1, 0, 1\}\) as coefficients. Does one need to use this set, or might another set of numbers do as well? The author investigates...*

*The authors study period-\(3\) orbits of the logistic function \( f_r(x)=rx(1-x)\), and provide another derivation of the fact that \(r_0=1+\sqrt {8}\), where \( r_0\) is the smallest positive...*

Andrew Wiles proves that Fermat's Last Theorem is false for integer exponents larger than \(2 \). Using the Gelfond-Schneider Theorem on transcendental numbers, the author generalizes...