Tag Archives: numbers

What Comes After Infinity?

When I was in kindergarten, we would argue about whose dad made the most money. I can’t fathom the reason. I guess it’s like arguing about who’s taller? Or who’s older? Or who has a later bedtime. I don’t know … Continue reading

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Positive Semi-Definite

Mathematical matrices are blocks of numbers. So they don’t necessarily have definite characteristics the way plain vanilla, singleton numbers do. They’re freer. For example 131 ∈ positive and −9 ∈ negative. But is positive, negative, or zero? Well, it has … Continue reading

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Ethnic Food as a Poset

I like Indonesian food better than Japanese food i ⪰ j, and I like Japanese food better than English food j ⪰ e. I also like French food better than English food f ⪰ e, but I see French food as so different … Continue reading

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How to multiply matrices

This is for my homies in math class. Mathematical matrices are blocks of numbers, arrayed in 2-D. (Higher-dimensional arrays are called tensors.) Left “times” right equals target. Each entry in the target is the result of a series of +’s … Continue reading

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!0 is 1

!0 === 1 Only tested this in Javascript and Ruby, but I bet it works in C like it did in Javascript. mars@scheherazade:~$ jsRhino 1.7 release 2 2010 01 20 js> 3+!04 Ruby is safeguarded against such hijinks: mars@scheherazade:~$ irbirb(main):001:0> … Continue reading

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