Tag Archives: noncommutative

More Quasimetrics

A list of quasimetrics from real life: one-way street temperature preferences ratchet running distance around the track magnitude downside risk in a financial portfolio Facebook EdgeRank progress time I love you, but you like me back. Ouch. (“He loves me … Continue reading

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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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The Hardest Sport

“Hitting a baseball is the hardest thing to do in sports.” —Ted Williams On the subject of noncommutative things from everyday life: what’s the hardest sport? People love to debate this question. Fans with a favourite sport say their athletes … Continue reading

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Valuation

Whenever a government assesses “the” value of a property for tax purposes; whenever you project figures in a pitch to investors; whenever an accountant writes a single number on a line that isn’t referring to Cash Itself — a distribution … Continue reading

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Noncommutative distances between industries

The distance from your house to the grocery must be the same as the distance back, but 20th-century mathematicians speculated about circumstances where this might not be the case. Very small-scale physics is non-commutative in some ways and so is … Continue reading

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Circles

A circle is made up of points equidistant from the center. But what does “equidistant” mean? Measuring distance implies a value judgment — for example, that moving to the left is just the same as moving to the right, moving forward … Continue reading

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Facebook EdgeRank Another quasimetric! Actually a pseudo-quasi-metric. Facebook’s news feed decides what status updates to show you based on three factors: affinity u — how much you like somebody (FB’s guess) type of post w — videos and photos are … Continue reading

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