a Ым>> from mpmath import * >>> mp.dps = 25; mp.pretty = True >>> qp(2,3,5) -725305.0 >>> fprod(1-2*3**k for k in range(5)) -725305.0 >>> qp(2,3,0) 1.0 Complex arguments are allowed:: >>> qp(2-1j, 0.75j) (0.4628842231660149089976379 + 4.481821753552703090628793j) The regular Pochhammer symbol `(a)_n` is obtained in the following limit as `q \to 1`:: >>> a, n = 4, 7 >>> limit(lambda q: qp(q**a,q,n) / (1-q)**n, 1) 604800.0 >>> rf(a,n) 604800.0 The Taylor series of the reciprocal Euler function gives the partition function `P(n)`, i.e. the number of ways of writing `n` as a sum of positive integers:: >>> taylor(lambda q: 1/qp(q), 0, 10) [1.0, 1.0, 2.0, 3.0, 5.0, 7.0, 11.0, 15.0, 22.0, 30.0, 42.0] Special values include:: >>> qp(0) 1.0 >>> findroot(diffun(qp), -0.4) # location of maximum -0.4112484791779547734440257 >>> qp(_) 1.228348867038575112586878 The q-Pochhammer symbol is related to the Jacobi theta functions. For example, the following identity holds:: >>> q = mpf(0.5) # arbitrary >>> qp(q) 0.2887880950866024212788997 >>> root(3,-2)*root(q,-24)*jtheta(2,pi/6,root(q,6)) 0.2887880950866024212788997 Nщzn cannot be negativerщ z#q-function only defined for |q| < 1┌maxtermsщ2c3szd}|Vd}И}Иd}d||Vd||V|Иd|d9}|Иd|d9}|d7}|ИkrИjВqdS)Nrщrщ)┌ NoConvergence)┌t┌k┌x1Zx2)┌ctxr┌qй·k/Users/vegardjervell/Documents/master/model/venv/lib/python3.9/site-packages/mpmath/functions/qfunctions.py┌termsfszqp..termsc3sHd}Иj}dИ|V|И9}|d7}|Иkr4dS|Иkr ИjВq dS)Nrr)┌oner )r┌rй┌arr┌nrrr┌factorsvszqp..factors) ┌convert┌inf┌ ValueErrorr┌absZzero┌get┌prec┌sum_accuratelyZmul_accurately) rrrr┌kwargsZinfiniteZsamerrrrr┌qps4J r!cKstt|Гdkr4|а|d|б||d|ddS|j||dfi|дО|j|||dfi|дОd|d|S)a■ Evaluates the q-gamma function .. math :: \Gamma_q(z) = \frac{(q; q)_{\infty}}{(q^z; q)_{\infty}} (1-q)^{1-z}. **Examples** Evaluation for real and complex arguments:: >>> from mpmath import * >>> mp.dps = 25; mp.pretty = True >>> qgamma(4,0.75) 4.046875 >>> qgamma(6,6) 121226245.0 >>> qgamma(3+4j, 0.5j) (0.1663082382255199834630088 + 0.01952474576025952984418217j) The q-gamma function satisfies a functional equation similar to that of the ordinary gamma function:: >>> q = mpf(0.25) >>> z = mpf(2.5) >>> qgamma(z+1,q) 1.428277424823760954685912 >>> (1-q**z)/(1-q)*qgamma(z,q) 1.428277424823760954685912 rrgр?N)r┌qgammar!)r┌zrr rrrr"Гs"( r"cKs`|а|бrH|а|бdkrHt|а|бГ}|j|||fi|дОd||S|j|d|fi|дОS)aє Evaluates the q-factorial, .. math :: [n]_q! = (1+q)(1+q+q^2)\cdots(1+q+\cdots+q^{n-1}) or more generally .. math :: [z]_q! = \frac{(q;q)_z}{(1-q)^z}. **Examples** >>> from mpmath import * >>> mp.dps = 25; mp.pretty = True >>> qfac(0,0) 1.0 >>> qfac(4,3) 2080.0 >>> qfac(5,6) 121226245.0 >>> qfac(1+1j, 2+1j) (0.4370556551322672478613695 + 0.2609739839216039203708921j) rr)Zisint┌_re┌intr!r")rr#rr rrrr┌qfacкs"r&c sИЗfddДИDГЙЗfddДИDГЙИаИбЙИаИбЙtИГ}tИГ}d||Й|аddИjбЙЗЗЗЗЗЗЗfddД}Иа|бS) a Evaluates the basic hypergeometric series or hypergeometric q-series .. math :: \,_r\phi_s \left[\begin{matrix} a_1 & a_2 & \ldots & a_r \\ b_1 & b_2 & \ldots & b_s \end{matrix} ; q,z \right] = \sum_{n=0}^\infty \frac{(a_1;q)_n, \ldots, (a_r;q)_n} {(b_1;q)_n, \ldots, (b_s;q)_n} \left((-1)^n q^{n\choose 2}\right)^{1+s-r} \frac{z^n}{(q;q)_n} where `(a;q)_n` denotes the q-Pochhammer symbol (see :func:`~mpmath.qp`). **Examples** Evaluation works for real and complex arguments:: >>> from mpmath import * >>> mp.dps = 25; mp.pretty = True >>> qhyper([0.5], [2.25], 0.25, 4) -0.1975849091263356009534385 >>> qhyper([0.5], [2.25], 0.25-0.25j, 4) (2.806330244925716649839237 + 3.568997623337943121769938j) >>> qhyper([1+j], [2,3+0.5j], 0.25, 3+4j) (9.112885171773400017270226 - 1.272756997166375050700388j) Comparing with a summation of the defining series, using :func:`~mpmath.nsum`:: >>> b, q, z = 3, 0.25, 0.5 >>> qhyper([], [b], q, z) 0.6221136748254495583228324 >>> nsum(lambda n: z**n / qp(q,q,n)/qp(b,q,n) * q**(n*(n-1)), [0,inf]) 0.6221136748254495583228324 csg|]}Иа|бСqSrйr)┌.0rйrrr┌ ∙єzqhyper..csg|]}Иа|бСqSrr')r(┌br)rrr*·r+rrrc3s▓Иj}|Vd}d}d}ИD]}d||}||9}qИD] }d||}|sRtВ||}q:|И9}|dИ|И9}|И9}|d|}|d7}||V|ИkrИjВqdS)Nrrr)rrr )rZqkr┌xr┌pr,й┌a_s┌b_sr┌drrr#rrrs* zqhyper..terms)r┌lenrrr) rr0r1rr#r r┌srrr/r┌qhyper╠s- r5)NN)Z functionsrrr!r"r&r5rrrr┌s & !