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SUPPLEMENTARY MATERIAL (USERS' MATHBOXES)
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Set theory
"Singletonization" and tagging
bj-csngl
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df-bj-sngl
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Syntax definition
bj-csngl
Description:
Syntax for singletonization.
(Contributed by
BJ
, 6-Oct-2018)
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Expression
Assertion
bj-csngl
class sngl A