Proper Extension

An extension A subset B of a group, ring, module, field, etc., such that A!=B.

See also

Extension Field, Extension Ring, Group Extension, Proper Subfield, Proper Submodule, Proper Subset, Proper Superset

This entry contributed by Margherita Barile

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Cite this as:

Barile, Margherita. "Proper Extension." From MathWorld--A Wolfram Resource, created by Eric W. Weisstein. https://mathworld.wolfram.com/ProperExtension.html

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