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LEM. In DICTIOUS you will not only get to know all the dictionary meanings for the word
LEM, but we will also tell you about its etymology, its characteristics and you will know how to say
LEM in singular and plural. Everything you need to know about the word
LEM you have here. The definition of the word
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English
Noun
LEM (plural LEMs)
- (US, space science) Originally Lunar Excursion Module, latterly Lunar Module.
- Synonym: LM
- Coordinate terms: SM, CM, OM
- (logic) Law of excluded middle.
2005, Andrej Bauer, Mathematics and Computation: The Law of Excluded Middle:What constructive mathematicians know is that there are mathematical universes in which sets are like topological spaces and properties are like open sets. In fact, these universes are well-known to classical mathematicians (they are called toposes), but they look at them from “the outside”. When we consider what mathematicians who live in such a universe see, we discover many fascinating kinds of mathematics, which tend to be constructive. The universe of classical mathematics is special because in it all sets are like discrete topological spaces. In fact, one way of understanding LEM is “all spaces/sets are discrete”. Is this really such a smart thing to assume? If for no other reason, LEM should be abandoned because it is quite customary to consider “continuous” and “discrete” domains in applications in computer science and physics. So what gives mathematicians the idea that all domains are discrete?
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