• Corpus ID: 237562879

A pasting lemma for Lipschitz functions

  title={A pasting lemma for Lipschitz functions},
  author={Matthew D. Kvalheim and Paul Gustafson and Samuel A. Burden},
We give a necessary and sufficient condition ensuring that any function which is separately Lipschitz on two fixed compact sets is Lipschitz on their union. The pasting [Mun00, Thm 18.3] (or gluing [Lee11, Lem. 3.23]) lemma asserts that a function which is separately continuous on two closed sets is continuous on their union. To quote [Wea18, p. 7]: “...there is no gluing lemma for Lipschitz functions. A function which is separately Lipschitz on two closed sets, even on two compact sets, need… 


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