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.
The paper is published promptly if once communicated by a Member of the Academy at its General Meeting, which is held monthly except in July and in August.
Volume 57, Number 7
Publication Date: 1981
Miscellaneous front pages, Proc. Japan Acad. Ser. A Math. Sci., Volume 57, Number 7 (1981)
The $\tau$ function of the Kadomtsev-Petviashvili equation transformation groups for soliton equations, I
Masaki Kashiwara and Tetsuji Miwa; 342-347
“Borel” lines for meromorphic solutions of the difference equation $y \left( {x + 1} \right) = y \left( x \right) + 1 + \lambda / y \left( x \right)$
Niro Yanagihara; 352-355
A remark on the boundary behavior of quasiconformal mappings and the classification of Riemann surfaces
Hiroshige Shiga; 356-358
Class number calculation and elliptic unit, III. Sextic case
Ken Nakamula; 363-366
On Richardson classes of unipotent elements in semisimple algebraic groups
Takeshi Hirai; 367-372
Modular forms of degree $n$ and representation by quadratic forms, III. Kloosterman's method
Yoshiyuki Kitaoka; 373-377
On the Galois cohomology groups of ${C_K} / {D_K}$
Shin-ichi Katayama; 378-380
A variational problem relating to the theory of optimal economic growth
Toru Maruyama; 381-386
Miscellaneous back pages, Proc. Japan Acad. Ser. A Math. Sci., Volume 57, Number 7 (1981)
Proceedings of the Japan Academy, Series A, Mathematical Sciences
