✦ LIBER ✦

National advisory committee for aeronautics: Report No. 225, The Air Forces on a Model of the Sperry Messenger Airplane without Propeller. By Max M. Munk and Walter S. Diehl. 12 pages, illustrations, quarto. Washington, Government Printing Office, 1925. Price, five cents

Publisher: Elsevier Science
Year: 1926
Tongue: English
Weight: 159 KB
Volume: 201
Category: Article
ISSN: 0016-0032
DOI: 10.1016/s0016-0032(26)90085-9

No coin nor oath required. For personal study only.

✦ Synopsis

Simultaneous equations. V-Non-elemental bases of Tables I andII. VI-Prime numbers less than 5600 (with a = 8n + I, 3, 5 and 7; and some primes greater than 5600). VII-Certain sums of two squares. VIII-Bases of the second kind. IX-Non-elemental bases. X-Summary of certain sums of two squares. XI-Summary of products of two prime numbers. The work is evidently intended for mathematical investigators rather than for those who utilize the results of mathematical research and do not primarily deal with the fundamentals of the subjects. The former type of users will find adequate information in the captions of the tables, but a larger class not so well qualified in the subject, yet deeply interested, would welcome a text on the subject.

However, the tables occupy a fairly large volume and a text might require one as large or larger. The tables, which the author states have been duly checked, represent an immense amount of skilfully directed labor and constitute a valudble addition to the equipment of investigators in the theory of numbers. The press-work is of a high order of excellence.

LUCIEN E. PICOLET.

NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS.. Report No. 225, The Air Forces on a Model of the Sperry Messenger Airplane without Propeller.

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