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Differential forms: homework 3
From Mathematics Is A Science
Revision as of 15:07, 15 August 2011 by imported>WikiSysop (Differential forms: homework 2 moved to Differential forms: homework 3)
State and prove the lemma:
Lemma. For any path in an open set in the plane there is a "step" path with the same end-points.
Hint: use the definition of openness (in terms of disks).
Comments: Approximating paths.