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The earliest q-analog studied in detail is the basic hypergeometric series, which was introduced in the 19th century. [1] q-analogs are most frequently studied in the mathematical fields of combinatorics and special functions. In these settings, the limit q → 1 is often formal, as q is often discrete-valued (for example, it may represent a ...
This series is called balanced if a 1... a k + 1 = b 1...b k q. This series is called well poised if a 1 q = a 2 b 1 = ... = a k + 1 b k, and very well poised if in addition a 2 = −a 3 = qa 1 1/2. The unilateral basic hypergeometric series is a q-analog of the hypergeometric series since
For 0 < q < 1, the series converges to a function F(x) on an interval (0,A] if |f(x)x α | is bounded on the interval (0, A] for some 0 ≤ α < 1. The q-integral is a Riemann–Stieltjes integral with respect to a step function having infinitely many points of increase at the points q j..The jump at the point q j is q j.
The q-Pochhammer symbol is a major building block in the construction of q-analogs; for instance, in the theory of basic hypergeometric series, it plays the role that the ordinary Pochhammer symbol plays in the theory of generalized hypergeometric series.
An infinite series of any rational function of can be reduced to a finite series of polygamma functions, by use of partial fraction decomposition, [8] as explained here. This fact can also be applied to finite series of rational functions, allowing the result to be computed in constant time even when the series contains a large number of terms.
Pentax Q series, cameras; Mathematics. Q-series; Hypergeometric q-series; See also. Q (disambiguation) This page was last edited on 26 ...