出典:Wiktionary
出典:『Wiktionary』 (2025/04/03 03:02 UTC 版)
Borrowed from Latin infimum (“lowest part”), from infimus (“lowest”).
infimum (plural infima or infimums)
īnfimum
出典:Wikipedia
出典:『Wikipedia』 (2011/07/21 08:46 UTC 版)
In mathematics, the infimum (plural infima) of a subset S of some partially ordered set T is the greatest element of T that is less than or equal to all elements of S. Consequently the term greatest lower bound (also abbreviated as glb or GLB) is also commonly used. Infima of real numbers are a common special case that is especially important in analysis. However, the general definition remains valid in the more abstract setting of order theory where arbitrary partially ordered sets are considered.
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