Orthocentric tetrahedron (Part 2)
In Part 1 we discussed the meaning of the adjective "orthocentric" and several properties of orthocentric tetrahedron. In this pos...
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We already know that the ring of polynomials of one variable over a field is a PID. Some common examples are $\mathbb{Q}[x]$, $\mathbb{R}[x]...
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Before getting into the topic of this post I want to tell a story about the mathematics curriculum in Vietnam. In the (former) national curr... -
In Part 1 we discussed the meaning of the adjective "orthocentric" and several properties of orthocentric tetrahedron. In this pos...