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Mathematical Notes
818. [J.2.b.] Tchebycheff’s Theorem
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- 03 November 2016, pp. 23-24
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878. [L1. 1.] Elements at Infinity
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- 03 November 2016, pp. 421-422
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Reviews
Elements of the Mathematical Theory of Limits. By J. G. Leathem. Pp. viii + 288. 14s. 1926. (G. Bell & Sons.)
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- 03 November 2016, pp. 287-288
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Mathematical Notes
842. [U.] Caveant Emptores
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- 03 November 2016, pp. 162-163
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Research Article
On the Approximation to Irrational Numbers By Rationals
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- 03 November 2016, pp. 362-366
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The problem of deciding whether a given number is irrational or not is frequently one of some difficulty, as in the proof that π is irrational. Several numbers which are very probably irrational have never been proved so, e.g. y, eπ. However, we have one quite simple test for deciding whether a number is irrational or not when we have the number expressed as a continued fraction, viz. if the continued fraction terminates, the number is rational; if not, irrational. In what follows we assume our irrational number given as a continued fraction :
or shortly
Reviews
Elementary Algebra. Part II. By F. Bowman. Pp. 431. 6s. (Longmans, Green.)
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- 03 November 2016, p. 460
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Mathematical Notes
The Reduction of the Equation of a Central Conic to its Simplest Form
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- 03 November 2016, p. 123
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Difference Equations
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- 03 November 2016, p. 202
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866. [V. 1. a. λ.] A Graphical Introduction to Logarithms
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- 03 November 2016, pp. 332-333
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Reviews
Vorlesungen über höhere Geometrie. By Felix Klein. 3rd edition. Edited by W. Blaschke. (Grundlehren der Mathematischen Wissenschaften, Bd. xxii.) Pp. vii+ 405. 24 marks. 1926. (Springer.)
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- 03 November 2016, pp. 398-399
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School Geometries in General and in Particular - (I.)The New Matriculation Geometry. By A. G. Cracknell and G. F. Perrott. Pp. X+303. 4s. 4d. 1925. (University Tutorial Press.) - (II.)A School Geometry on “New Sequence” Lines. By W. M. Baker and A. A. Bourne. Pp. viii+307. 4s. 6d. Bks. I. to III., 2s. 6d.; Bks. I. to V., 4s. 1925. (G. Bell & Sons.)
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- 03 November 2016, pp. 89-90
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Mathematical Note
870. [X. 4, b. α.] The Graphical Solution of Quadratic Equations
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- 03 November 2016, p. 367
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Mathematical Notes
857. [L1. 9. d.] Note on Expression for Arc of Ellipse
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- 03 November 2016, pp. 245-247
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Reviews
Vectorial Mechanics. By L. Silberstein. 2nd edition. Pp. x + 205. 10s. 1926. (Macmillan.)
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- 03 November 2016, p. 90
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Mathematical Notes
Suggested by:—HP, PS are chords of a circle. Required to construct in the circle a quadrilateral such that HP, PS, being two of the sides, a circle can be inscribed in it
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- 03 November 2016, p. 124
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Reviews
Mathematical and Physical Papers, 1903-1913. By Benjamin Osgood Peirce. 1926. (Harvard University Press.)
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- 03 November 2016, p. 399
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Modern Algebraic Theories. By L. E. Dickson, Ph.D. Pp. 273, with Index. 15s. 1926. (Sanborn & Co., Chicago.)
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- 03 November 2016, pp. 288-289
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The Evolution of Man Mathematically Disproved. By the Rev. William A. Williams, D.D. Pp. 125 + hymn and index. Price $1.00, mailed to all countries; two copies for $1.00 to all who will become agents at 50 per cent, commission. 1925. (Published by the author at 1202 Atlantic Avenue, Camden, New Jersey, U.S.A.)
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- 03 November 2016, p. 460
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Mathematical Notes
819. [V. l. a. α.] Suggestion for first lessons on Calculus
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- 03 November 2016, p. 24
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867. [K1. 7. e.] Distance-Relations in an Involution Range
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- 03 November 2016, p. 333
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