On the Formula {\left( {{{dx} \over {ds}}} \ight)^2} + {\left( {{{dy} \over {ds}}} \ight)^2} = 1,

Tohoku Mathematical Journal, First Series

Online ISSN : 1881-2015
Print ISSN : 0040-8735
ISSN-L : 0040-8735

On the Formula {\left( {{{dx} \over {ds}}} \ ight)^2} + {\left( {{{dy} \over {ds}}} \ ight)^2} = 1,

T. HAYASHI

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JOURNAL FREE ACCESS

1913 Volume 3 Pages 179

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