Tag Archives: math

ASCII-art Math

Many of computer algebra systems date back to the times when GUI machines were rare and expensive, if were present at all. Thus command line was a standard interface. Unfortunately text terminal doesn’t fit very well for displaying mathematical expressions … Continue reading

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Number of Inversions: Image vs. Text

This post is quick. I’m going to draw your attention to a neat technique used to calculate a number of inversions of a given permutation. It’s a really pity I wasn’t told it when they first tried to teach me … Continue reading

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