Uspekhi Mat. Nauk, 1955, Volume 10, Issue 2(64)

JOURNALS // Uspekhi Matematicheskikh Nauk // Archive

1955, Volume 10, Issue 2(64)

	The theory of spinors P. K. Rashevskii	3
	Continuous direct sums of Hilbert spaces and some of their applications M. A. Naimark, S. V. Fomin	111

Scientific notes and problems
	Propagation of discontinuities of higher derivatives along characteristics B. M. Bulakh	143
	On Cauchy's problem for integro-differential equations in first-order partial derivatives T. I. Vigranenko	147
	Cauchy's problem for some partial differential equations with functional arguments I. M. Gul'	153
	Lemma on the limit of compound random functions R. L. Dobrushin	157
	On Gateaux and Fréchet differentials N. A. Ivaniv	161
	On the $p$-variation of mappings and summability of powers of the Radon–Nikodim derivative L. D. Kudryavtsev	167
	On the theory of linear functional equations A. I. Polak	175
	On the mean value of a functional E. M. Polishchuk	179
	On the integral representation of certain classes of entire functions K. M. Fishman	187
	On discontinuities of solutions of quasi-linear equations N. N. Yanenko	195

In the Moscow Mathematical Society
	Meetings of the Moscow Mathematical Society	203

Mathematical Events in the USSR
	Lyudmila Vsevolodovna Keldysh (photo)
	Lyudmila Vsevolodovna Keldysh (on her fiftieth birthday) P. S. Aleksandrov, A. A. Lyapunov	217
	Meeting for the centennial of the birth of Henri Poincaré F. P. Otradnykh	224

Reviews and Bibliography
	I. K. Andronov, The arithmetic of natural numbers (review) N. Ya. Vilenkin, I. M. Yaglom	225
	Proceedings of Institute for History of Science and Technology, vol. I (review) A. T. Grigor'yan	228
	K. P. Yakovlev, Mathematical treatment of the results of measurements (review) L. Z. Rumshiskii	231
	V. M. Gerasimova, Index to the literature of the geometry of Lobachevskii and the development of his ideas (review) A. Lukomskaya, Yu. M. Gaiduk	237

Letters to the Editor
	On a paper of N. K. Usmanov A. D. Myshkis	242