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Related to arithmetic progression: geometric progression, harmonic progression
See: accession, advance, advancement, arrangement, array, boom, chain, civilization, continuity, cycle, enlargement, gamut, headway, hierarchy, improvement, increase, manner, order, progress, promotion, prosperity, reform, sequence, serial, step, succession, way

PROGRESSION. That state of a business which is neither the commencement nor the end. Some act done after the matter has commenced and before it is completed. Plowd. 343. Vide Consummation; Inception.

References in periodicals archive ?
Note that, in each interval, the terms are in arithmetic progression (AP) with common diference [d.
This follows from the fact that the sum of an arithmetic progression [a.
Mathematicians and others had identified numerous examples involving six consecutive primes in arithmetic progression, but no examples of seven.
We shall make use of Dirichlet's Theorem on primes in arithmetic progression in the following form.
The author begins with a thorough introduction to elementary prime number theory, including Dirichlet's theorem on primes in arithmetic progressions, the Brun sieve, and the Erdos-Selberg proof of the prime number theorem.
Montgomery, Primes in arithmetic progressions, Mich.
Just in case you thought that magic squares were just amusing diversions and had no relevance to any other areas of mathematics, this very problem (construction of a 3 by 3 magic square all of whose entries are squares) has been shown to be highly relevant to problems in various domains, including arithmetic progressions, Pythagorean triangles, and elliptic curves.