Whitney, Hassler Functions differentiable on the boundaries of regions. (English) Zbl 0009.30901 Ann. Math. (2) 35, 482-485 (1934). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 ReviewsCited in 28 Documents Keywords:set theory, real functions PDFBibTeX XMLCite \textit{H. Whitney}, Ann. Math. (2) 35, 482--485 (1934; Zbl 0009.30901) Full Text: DOI