Definitions
(mathematics) a subset (that is not empty) of a mathematical group
Word origin
From sub- + group.
Used in a sentence
“The most important application of dysprosium and terbium, which belong to a subgroup known as the heavy rare earths, is in devices called neodymium boron magnets, or neo magnets for short.”
“This is applied in Chapter 9 to prove the first congruence subgroup theorem, which asserts that g.z = z for all z in the center of the Drinfel'd double D(H) and all g in the principal congruence subgroup.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Smaller division”8 letters
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