Uber die Ungleichung ∂u/∂y>f(x, y, u, ∂u/∂x)

• 1 January 1939
• journal article
• Published by Mathematical Society of Japan (JST) in Japanese journal of mathematics :transactions and abstracts
• Vol. 15, 51-56
• https://doi.org/10.4099/jjm1924.15.0_51

Abstract