Tag Archives: semigroups

Listen to the doctor crystilogic: Kidney, this time with ions and color. It’s a whole crazy world down there. This is one of the thousands of small tubes that urine moves along on its way through the kidney, with all … Continue reading

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[G]eometry and number[s]…are unified by the concept of a coordinate system, which allows one to convert geometric objects to numeric ones or vice versa. … [O]ne can view the length ❘AB❘ of a line segment AB not as a number … Continue reading

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The Wild Prologue

Semigroups are like groups but semigroup elements don’t always have inverses, necessarily. Semigroups obey the associative law: a then b, then c       =       b then c, after a. but not necessarily the commutative law (3+14=14+3). Aristotle observed … Continue reading

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