Are there any real numbers that are NOT algebraic, i.e., expressible as the root of a non-zero polynomial with integer coefficients? In fact,...
Continue reading...polynomial
Lucas’ Theorem
Lucas’ Theorem: If p is a prime number, and N has base p representation (aj,…,a1,a0) and k has base p...
Continue reading...Odd Numbers in Pascal’s Triangle
Pascal’s Triangle has many surprising patterns and properties. For instance, we can ask: “how many odd numbers are in row N...
Continue reading...Sierpinski-Mazurkiewicz Paradox
If you’ve seen the Banach-Tarski paradox, you know that it is possible to cut a solid 3-dimensional ball into 5 pieces...
Continue reading...Descartes’ Rule of Signs
Given a polynomial such as: x4 + 7×3 – 4×2 – x – 7 it is possible to say anything about how many positive real...
Continue reading...Formula for Primes?
Is there a nice cozy formula that will always spit out primes? Try this one: f(n) = n2 + n +...
Continue reading...Successive Differences of Powers
List the squares: 0, 1, 4, 9, 16, 25, 36, 49, … Then take their successive differences: 1, 3, 5,...
Continue reading...Pascal’s Triangle
Consider the triangle in Figure 1, called Pascal’s triangle. It consists of numbers where each entry is the sum of the...
Continue reading...