The aim of the Proceedings of the Japan Academy, Series A, is the rapid publication of original papers in mathematical sciences. The paper should be written in English or French (preferably in English), and at most 6 pages long when published. A paper that is a résumé or an announcement (i.e. one whose details are to be published elsewhere) can also be submitted.

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### Volume 46, Number 1

#### Publication Date: 1970

On functions of Yosida's class (A)

V. I. Gavrilov; 1-2

On a problem of vanishing algebras

Tetsuhiro Shimizu; 3-4

On $wM$-spaces, I

On $wM$-spaces, II

$wM$-spaces and closed maps

Applications of the theorem giving the necessary and sufficient condition for the normality of product spaces

Masahiko Atsuji; 22-26

Sufficient conditions for the normality of the product of two spaces

Masahiko Atsuji; 27-29

Some theorems on cluster sets of set-mappings

Shinji Yamashita; 30-32

On a class of hypoelliptic differential operators

Yoshio Kato; 33-37

Characterizations of strongly regular rings

S. Lajos and F. Szász; 38-40

On generalized integrals, VI. Restrictions of $\left( \mathrm{E.R} \right)$ integral, I

Shizu Nakanishi and Kumiko Fujita; 41-46

Ergodic and mixing properties of measure preserving transformations

Eijun Kin; 47-50

On vector measures, I

Sachio Ohba; 51-53

Some cross norms which are not uniformly cross

Takateru Okayasu; 54-57

Remark on the $A^p \left( G \right)$-algebras

Hang-Chin Lai; 58-63

Note on the Archimedean property in an ordered semigroup

Tôru Saitô; 64-65