Geodesic
An Elementary Proof of a Theorem on Unilateral Derivatives
Canadian mathematical bulletin, Tome 29 (1986) no. 3, pp. 341-343

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DOI

We give an elementary proof of the theorem of Saks that states that most functions in C[0, 1] have infinite unilateral derivatives at a continuum many points.
DOI : 10.4153/CMB-1986-052-5
Mots-clés : infinite unilateral derivative, continuum many points, complete metric space, 26A15, 26A24, 26A27 
Cater, F. S. An Elementary Proof of a Theorem on Unilateral Derivatives. Canadian mathematical bulletin, Tome 29 (1986) no. 3, pp. 341-343. doi: 10.4153/CMB-1986-052-5
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     title = {An {Elementary} {Proof} of a {Theorem} on {Unilateral} {Derivatives}},
     journal = {Canadian mathematical bulletin},
     pages = {341--343},
     year = {1986},
     volume = {29},
     number = {3},
     doi = {10.4153/CMB-1986-052-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1986-052-5/}
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