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Permutation Groups
I’ve recently started a new research project that has connections to permutation groups. For this reason, I thought that I would write an article about them so that friends and family could learn a little math regarding what I might be thinking about…
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Euler’s Little Theorem (Bonus Proof)
For those who followed the Newbie as Number Theory series, you would have already seen both Fermat’s Little Theorem and what I dubbed Euler’s Little Theorem. The proof we gave in the article about Euler’s little theorem did not rely on Fermat’s little…
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Let’s Get Real… Analysis (Part 5): the Monotone Convergence Theorem
It’s time! For long time readers, you might recall that we first mentioned the monotone convergence theorem wayyy back in December of 2024 in the article, “Incredibly Serious, Inductive Sequences“. It’s now time to tackle this once and for all! Oh, and by no…
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Let’s Get Real… Analysis (Part 4): The Squeeze Theorem
We’ve studied what it means for a sequence to converge to a limit, but we don’t want to be forced to have to prove every limit using the definition! So today, we learn our first tool to prove a limit exists and find…
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Let’s Get Real… Analysis (Part 3.2) Uniqueness of Limits
We meet again in our real analysis series! In part 1 we learned about the supremum and infimum and then in part 2 we learned about sequence limits. Part 3 has been broken up into two parts: 3.1 is on the triangle inequality…
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Let’s Get Real… Analysis (Part 3.1) The Triangle Inequality
Let’s get straight into this one today! The Triangle Inequality As the name suggests, this is an equality that can be related back to a triangle. Consider the triangle’s sides below, The triangle inequality states: the sum of any two side lengths of…
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Let’s Get Real… Analysis (Part 2): Sequence Limits
Sequences are absolutely fundamental to real analysis. They are the bed rock of most of what we will learn that will follow. Not only will our work on infinite series be based on taking limits of sequences, but a lot of definitions in…
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Let’s get Real… Analysis (Part 1): Super Supremum and Infamous Infimum
Mathematicians love to generalize/extend ideas and concepts. There seems to be no limit to their creativity in finding ever more generalized versions of everyday concepts. From exponentiation first being shorthand for repeated multiplication, e.g. to extending exponentiation to include rational exponents like And…
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Time Dilation Through the Geometry of Right Triangles
Today’s an exciting day, our first venture into physics together. Since everyone, including myself, loves time dilation and special relativity I really wanted to start with this topic. Also, a small comment one of my friends made regarding how crucial geometry was to…
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Newbie at Number Theory (Part 9): Euler’s Little Theorem
As you might have guessed, we’re going learn about Euler’s generalization of Fermat’s Little Theorem, that I’ve dubbed Euler’s Little Theorem. Note this is only what I call the theorem, unfortunately no one else seems to call it this! But, maybe if you…
