Some Facts about Union of Two Functions and Continuity of Union of Functions

Yatsuka Nakamura

Shinshu University, Nagano

Agata Darmochwal

Warsaw University, Bialystok

The article was written during my work at Shinshu University, 1991.

Summary.

Proofs of two theorems connected with union of any two functions and the proofs of two theorems about continuity of the union of two continuous functions between topogical spaces. The theorem stating that union of two subsets of $R^2$, which are homeomorphic to unit interval and have only one terminal joined point is also homeomorphic to unit interval is proved, too.

MML Identifier: TOPMETR2

Contents (PDF format)

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