{"id":"n-89f0132b57ffc5a7","revision":0,"first_index":0,"fingerprint":"f6-96ad4e4ff7c13b82","name":"derivative of basis_map_A013611 of Triangle of coefficients of polynomials u(n,x) jointly generated with A207607; see the Formula section.","polytool_family":null,"interpretation":null,"rows_observed":15,"degree_pattern":"affine","degree_slope":1,"degree_intercept":1,"palindromic":0,"gamma_positive":0,"nonnegative":1,"rr_by_factors":false,"rows":[["44","64"],["176","544","384"],["620","2976","4416","2048"],["2040","13344","30720","29696","10240"],["6432","53376","167808","250880","179200","49152"],["19696","198240","792960","1617920","1781760","1007616","229376"],["59044","698912","3400512","8832000","13255680","11526144","5390336","1048576"],["174160","2370848","13602048","43014144","82145280","97198080","69730304","27787264","4718592"],["507220","7806912","51630720","192754688","448250880","674365440","657391616","401080320","139198464","20971520"],["1462128","25107648","188131584","810613760","2226380800","4077502464","5049483264","4180672512","2217738240","681574400","92274688"],["4179264","79213056","663409920","3242455040","10283960320","22244769792","33519403008","35224289280","25327042560","11880366080","3275751424","402653184"],["11861336","245965632","2277376512","12454937600","44837775360","112019816448","199317651456","254723751936","232272691200","147524157440","62008590336","15502147584","1744830464"],["33461660","753574528","7644513408","46268365824","186504053760","529036001280","1087192694784","1640113373184","1817747914752","1463015178240","831856312320","316686729216","72410464256","7516192768"],["93908720","2282451232","25177610880","167120898048","746016215040","2370307645440","5531095105536","9635640115200","12601481232384","12320400998400","8870827130880","4564476493824","1587795722240","334470578176","32212254720"],["262362812","6845048928","81583026624","589374919680","2887149081600","10162764767232","26567528300544","52551813169152","79347076300800","91504771072000","79990389473280","52085806596096","24470374842368","7835630960640","1530082099200","137438953472"]],"degrees":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15],"row_sums":["108","1104","10060","86040","706848","5647568","44211204","340740720","2593957780","19550941488","146147492928","1084941553304","8006778829980","58789398360720","429748890974428"],"nonn":true,"definitions":[{"position":0,"source":"derived:derivative","source_kind":"derived","equality_edge_id":null,"recurrence":{"first_index":0,"initial_polynomials":[["44","64"]],"recurrence":{"denominator":{"coeffs":[["-24","96"],["-16","160"],["8","64"]]},"terms":[{"coeff":{"coeffs":[["-132","336","768"],["-8","448","640"],["12","112","128"]]},"deriv_order":0,"offset":1,"sign":"none"},{"coeff":{"coeffs":[["-5","56","368","256"],["5","64","208","128"]]},"deriv_order":1,"offset":1,"sign":"none"}]},"schema":"polytool.recurrence.v1"}}],"properties":[{"id":186913,"position":0,"claim":"real_rooted","from_index":0,"region_key":"(-inf, 0]","provenance":"edges","claim_data":{"claim":"real_rooted","from_index":0,"region":{"upper":{"closed":true,"value":"0"}}},"label":"Real-rooted","description":"Every row P_n, n >= 0, is zero or real-rooted with all roots in (-inf, 0]","region_exact":null,"edges":["e-6884887541d5f554"]},{"id":186914,"position":1,"claim":"one_signed_coefficients","from_index":0,"region_key":null,"provenance":"derived_from_edges","claim_data":{"alternating":false,"claim":"one_signed_coefficients","from_index":0},"label":"Coefficients of one sign","description":"Every nonzero row, n >= 0: the coefficients of P_n have one sign","region_exact":null,"edges":["e-6884887541d5f554"]},{"id":186915,"position":2,"claim":"hadamard_kernel","from_index":0,"region_key":null,"provenance":"derived_from_edges","claim_data":{"claim":"hadamard_kernel","from_index":0},"label":"Hadamard kernel (Malo)","description":"Rows P_n, n >= 0, are Hadamard kernels (preserve real-rootedness)","region_exact":null,"edges":["e-6884887541d5f554"]},{"id":186916,"position":3,"claim":"interlacing","from_index":1,"region_key":null,"provenance":"edges","claim_data":{"claim":"interlacing","from_index":1,"kind":"weak","orientation":"unordered"},"label":"Interlacing of consecutive rows","description":"Rows P_(m-1), P_m interlace (weak, unordered) for every m >= 1","region_exact":null,"edges":["e-6884887541d5f554"]}],"region_exact":{},"incoming_edges":[{"id":"e-6884887541d5f554","operation":{"index_shift":0,"operation":"preserver_image","operator":"{\"shape\":\"derivative_polynomial\",\"coefficients\":[{\"numerator\":[\"0\"],\"denominator\":[\"1\"]},{\"numerator\":[\"1\"],\"denominator\":[\"1\"]}]}"},"operation_detail":"derivative_polynomial, shift 0","conclusion_id":"n-89f0132b57ffc5a7","premise_count":1,"theorem":"Laguerre's theorem on differential operators: if phi is a real polynomial with only real roots, then phi(D) maps every real-rooted polynomial to a real-rooted polynomial or zero (write phi(D) = C D^j prod (1 + c_i D); D preserves real-rootedness by Rolle's theorem and p + c p' is real-rooted for every real c by Rolle's theorem applied to e^(x/c) p; Polya--Schur 1914); when the coefficients of phi have one sign, coefficients of one sign stay of one sign; applied to phi(n, .) for each n","lean_route":null,"lean_declarations":["RealRooted.splits_add_C_mul_derivative_all","RealRooted.splits_C_mul_add_derivative","Polynomial.Splits.derivative"],"certificate_hash":"af6f05e123d7d083f1e0b628532f18df661a1c3954f05138a7cb260c8bd3d1b1","verification_polytool":"replayed","verification_lean":"not_attempted","claims":[{"claim":"real_rooted","from_index":0,"region":{"upper":{"closed":true,"value":"0"}}},{"claim":"interlacing","from_index":1,"kind":"weak","orientation":"unordered"}],"premises":[{"position":0,"node_id":"n-b85d9f7216f04287","role":"sequence","name":"basis_map_A013611 of Triangle of coefficients of polynomials u(n,x) jointly generated with A207607; see the Formula section.","uses":{"claim":"real_rooted","from_index":0,"region":{"upper":{"closed":true,"value":"0"}}},"uses_text":"Every row P_n, n >= 0, is zero or real-rooted with all roots in (-inf, 0]"}]}],"used_by":[],"used_by_total":0,"links":[],"oeis":[],"bfiles":[],"oeis_texts":[{"oeis_id":"","target":"node","first_row":0,"oeis_offset":0,"reversed":false,"trim_zeros":"none","regular_triangle":false,"rows_shown":10,"polytool_commit":"c48629374597092cc41ef4d6273f37991516f984","triangle_example":"Triangle begins:\n  0:      44,       64;\n  1:     176,      544,       384;\n  2:     620,     2976,      4416,      2048;\n  3:    2040,    13344,     30720,     29696,      10240;\n  4:    6432,    53376,    167808,    250880,     179200,      49152;\n  5:   19696,   198240,    792960,   1617920,    1781760,    1007616,     229376;\n  6:   59044,   698912,   3400512,   8832000,   13255680,   11526144,    5390336,    1048576;\n  7:  174160,  2370848,  13602048,  43014144,   82145280,   97198080,   69730304,   27787264,    4718592;\n  8:  507220,  7806912,  51630720, 192754688,  448250880,  674365440,  657391616,  401080320,  139198464,  20971520;\n  9: 1462128, 25107648, 188131584, 810613760, 2226380800, 4077502464, 5049483264, 4180672512, 2217738240, 681574400, 92274688;\n","recurrence_sentence":"The row polynomials satisfy (8*n^2-16*n-24+(64*n^2+160*n+96)*x)*P(n,x) = (12*n^2-8*n-132+(112*n^2+448*n+336)*x+(128*n^2+640*n+768)*x^2)*P(n-1,x) + (5*n-5+(64*n+56)*x+(208*n+368)*x^2+(128*n+256)*x^3)*d/dx P(n-1,x) for n >= 1, with P(0,x) = 44 + 64*x.","mathematica":"P[0, x_] := 44 + 64*x;\nP[n_, x_] := P[n, x] = Expand[Together[((12*n^2 - 8*n - 132 + (112*n^2 + 448*n + 336)*x + (128*n^2 + 640*n + 768)*x^2)*P[n - 1, x] + (5*n - 5 + (64*n + 56)*x + (208*n + 368)*x^2 + (128*n + 256)*x^3)*D[P[n - 1, x], x])/(8*n^2 - 16*n - 24 + (64*n^2 + 160*n + 96)*x)]];\nTable[CoefficientList[P[n, x], x], {n, 0, 9}] // Flatten","pari":"P(N) = {my(v = vector(N + 1)); v[1] = 44 + 64*x; for(n = 1, N, my(i = n + 1); v[i] = ((12*n^2 - 8*n - 132 + (112*n^2 + 448*n + 336)*x + (128*n^2 + 640*n + 768)*x^2)*v[i - 1] + (5*n - 5 + (64*n + 56)*x + (208*n + 368)*x^2 + (128*n + 256)*x^3)*deriv(v[i - 1], x))/(8*n^2 - 16*n - 24 + (64*n^2 + 160*n + 96)*x)); v};\nrow(n, p) = {my(c = Vecrev(p)); c};\nT(N) = {my(v = P(N)); concat(vector(#v, i, row(i - 1, v[i])))};\nT(9)","reading":{"first_row":0,"offset":0,"reversed":false,"trim_zeros":"none","regular_triangle":false}}],"derivation":{"root":"n-dfab35176bd08e72","steps":["basis A013611","D"],"edges":["e-b12bbff1e34cdc3a","e-6884887541d5f554"],"text":"A207606 \u2192 basis A013611 \u2192 D"},"headline":"A207606 \u2192 basis A013611 \u2192 D","chain":null}
