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SUPPLEMENTARY MATERIAL (USERS' MATHBOXES)
Mathbox for BJ
Extended real and complex numbers, real and complex projective lines
Extended numbers and projective lines as sets
cpinfty
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df-bj-pinfty
Metamath Proof Explorer
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Structured
Syntax definition
cpinfty
Description:
Syntax for "plus infinity".
Ref
Expression
Assertion
cpinfty
class
+∞