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is continuous iff closure of f inverse B is subset of f inverse of closure of B pdf
is continuous iff closure of f inverse B is subset of f inverse of closure of B handwritten notes
X and Y are spaces, is continuous iff closure of f inverse B is subset of f inverse of closure of B

PDF Notes

https://omgmaths.com/wp-content/uploads/2021/03/F-Is-Continous-Iff-Closure-Of-F-Inverse-B-Is-Subset-Of-F-Inverse-B-Closure-Pdf.pdf