A Borcherds Product in S9(K(16))

(Filename: BP-9-16-1-0-7.html)

properties | c vector | θ vector | ψ expansion | Borch(ψ) coefficients


PROPERTIES OF ψ AND BORCH(ψ)
We will define a weakly holomorphic Jacobi form ψ of weight 0 and index 16, such that it and its Borcherds lift Borch(ψ) have the following list of properties.


THE VECTOR c (return to top)
The vector c has components given by the following table.
c16148601996108588/1520173324496827395
c252996815145861179199/5910433885643664911760
c3-1540636627359978455527/2513412009869968503725940
c4-148978381169260747742/69817000274165791770165
c5-302282422775283319903/139634000548331583540330
c6-6755832211301260377791/2513412009869968503725940
c71540636627359978455527/2513412009869968503725940
c8862850037643019099/6649238121349123025730
c9-74922479573614387687/59843143092142107231570
c10-11888884880084287891/39895428728094738154380
c113544999033204435/73880423570545811397
c1220827662277345196057/89764714638213160847355


THE VECTOR θ (return to top)
The basis of J12,16cusp (with dimension 12) is given by the following theta blocks possibly with index lowering operators denoted by W.
θ1TB(12;1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,3,3,4)|W_2
θ2TB(12;1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,3,3)|W_2
θ3TB(12;1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,8)|W_3
θ4TB(12;1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,4,7)|W_3
θ5TB(12;1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,4,4,4,5)|W_3
θ6TB(12;1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,3,3,3,4,4,4)|W_3
θ7TB(12;1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,7)|W_3
θ8TB(12;1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,5,5)|W_3
θ9TB(12;1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,3,3,3,3,3,3,4)|W_3
θ10TB(12;1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,3,3,3,3,3,3)|W_3
θ11TB(12;1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,5)|W_3
θ12TB(12;1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3)|W_3


EXPANSION OF ψ (return to top)

The expansion of ψ up to q^(16/4) is

(18 + ζ^(-4) + ζ^(-3) + 2/ζ^2 - ζ^(-1) - ζ + 2*ζ^2 + ζ^3 + ζ^4)
+q(2154 + ζ^(-10) - 9/ζ^8 + 26/ζ^7 + 135/ζ^6 - 405/ζ^5 - 44/ζ^4 + 1083/ζ^3 - 1160/ζ^2 - 704/ζ - 704*ζ - 1160*ζ^2 + 1083*ζ^3 - 44*ζ^4 - 405*ζ^5 + 135*ζ^6 + 26*ζ^7 - 9*ζ^8 + ζ^10)
+q^2(53676 - 27/ζ^11 + 138/ζ^10 + 301/ζ^9 - 2022/ζ^8 + 1911/ζ^7 + 6744/ζ^6 - 15528/ζ^5 - 240/ζ^4 + 32537/ζ^3 - 31458/ζ^2 - 19194/ζ - 19194*ζ - 31458*ζ^2 + 32537*ζ^3 - 240*ζ^4 - 15528*ζ^5 + 6744*ζ^6 + 1911*ζ^7 - 2022*ζ^8 + 301*ζ^9 + 138*ζ^10 - 27*ζ^11)
+q^3(723304 + ζ^(-14) + 105/ζ^13 - 20/ζ^12 - 2915/ζ^11 + 6777/ζ^10 + 9534/ζ^9 - 52900/ζ^8 + 39585/ζ^7 + 124599/ζ^6 - 254608/ζ^5 - 1532/ζ^4 + 472590/ζ^3 - 438577/ζ^2 - 264291/ζ - 264291*ζ - 438577*ζ^2 + 472590*ζ^3 - 1532*ζ^4 - 254608*ζ^5 + 124599*ζ^6 + 39585*ζ^7 - 52900*ζ^8 + 9534*ζ^9 + 6777*ζ^10 - 2915*ζ^11 - 20*ζ^12 + 105*ζ^13 + ζ^14)
+q^4(6823944 + 20/ζ^16 - 78/ζ^15 - 1162/ζ^14 + 6775/ζ^13 - 273/ζ^12 - 67336/ζ^11 + 124692/ζ^10 + 145041/ζ^9 - 719000/ζ^8 + 481535/ζ^7 + 1410534/ζ^6 - 2710667/ζ^5 - 5743/ζ^4 + 4662354/ζ^3 - 4221040/ζ^2 - 2517624/ζ - 2517624*ζ - 4221040*ζ^2 + 4662354*ζ^3 - 5743*ζ^4 - 2710667*ζ^5 + 1410534*ζ^6 + 481535*ζ^7 - 719000*ζ^8 + 145041*ζ^9 + 124692*ζ^10 - 67336*ζ^11 - 273*ζ^12 + 6775*ζ^13 - 1162*ζ^14 - 78*ζ^15 + 20*ζ^16)


COEFFICIENTS OF Borch(ψ) (return to top)
Use the notation
    [a b c ]=
 
a b
b c
 
Here is a list of some Fourier coefficients of Borch(ψ)

2udet(2u)a(u, Borch(ψ))
[4 -53 704]70
[8 -89 992]150
[4 -25 160]150
[12 -109 992]230
[6 -13 32]230
[6 -19 64]231
[14 -42 128]280
[14 -70 352]280
[8 -42 224]280
[8 -106 1408]281
[16 -113 800]310
[8 -113 1600]310
[14 -47 160]31-1
[20 -101 512]391
[10 -91 832]390
[10 -101 1024]390
[8 -27 96]399
[24 -73 224]47-1
[4 9 32]471
[16 -55 192]47-10
[2 4 32]48-1
[26 76 224]48-1
[6 12 32]48-1
[14 36 96]48-1
[2 3 32]551
[14 -29 64]550
[14 -99 704]550
[8 -35 160]5525
[2 2 32]602
[30 -210 1472]602
[16 -50 160]602
[16 -178 1984]601
[10 -30 96]6018
[10 -50 256]602
[8 -114 1632]602
[2 1 32]632
[16 -225 3168]630
[12 -159 2112]6328
[8 -97 1184]6334
[2 0 32]640
[2 8 64]642
[2 16 160]640
[4 8 32]642
[20 56 160]64-2
[10 -24 64]642
[10 -144 2080]640
[36 -469 6112]71-3
[18 -235 3072]713
[120 277 640]713
[10 -53 288]71-3
[40 -441 4864]792
[190 441 1024]79-2
[44 -397 3584]87-1
[22 -243 2688]87-11
[134 307 704]87-1
[46 -138 416]922
[46 -230 1152]922
[4 6 32]92-2
[24 -218 1984]92-1
[162 374 864]922
[6 26 128]9234
[26 -86 288]9214
[12 -26 64]92-1
[12 -122 1248]92-18
[12 -134 1504]9234
[48 -337 2368]955
[4 17 96]957
[16 -81 416]95-7
[10 15 32]955
[52 -261 1312]103-11
[4 5 32]10311
[56 -169 512]11114
[120 297 736]11129
[6 9 32]111-14
[10 23 64]111-29
[2 4 64]11212
[58 172 512]11212
[4 4 32]11212
[28 -84 256]112-20
[28 -140 704]112-12
[28 -196 1376]11220
[14 -28 64]112-20
[8 12 32]11212
[16 -84 448]112-20
[2 3 64]119-17
[30 -451 6784]11917
[20 -61 192]119-84
[90 221 544]119142
[12 -61 320]119-84
[12 -125 1312]119-142
[2 2 64]124-26
[62 -434 3040]124-26
[4 2 32]124-26
[16 -226 3200]124-40
[8 34 160]124262
[28 -94 320]124184
[10 14 32]124-26
[14 -158 1792]124262
[2 1 64]127-27
[4 1 32]127-27
[2 0 64]1280
[2 8 96]128-24
[2 16 192]1280
[4 0 32]1280
[4 16 96]128-32
[6 8 32]128-24
[22 -112 576]12832
[22 -288 3776]12832
[18 -256 3648]1280
[12 16 32]1280
[12 -64 352]128-32
[68 -885 11520]13541
[34 -171 864]135-162
[24 -267 2976]135-198
[8 11 32]13541
[72 -793 8736]143-27
[42 121 352]143137
[6 7 32]143-27
[6 25 128]14379
[18 -199 2208]14379
[12 -25 64]143-137
[76 -685 6176]15114
[38 -115 352]15170
[8 19 64]151-70
[10 13 32]151-14
[78 -234 704]156-28
[78 -390 1952]156-28
[40 -202 1024]156281
[40 -522 6816]156-44
[6 6 32]15628
[8 10 32]15628
[10 22 64]156-44
[80 -561 3936]159-72
[46 -143 448]15965
[28 -143 736]15965
[12 15 32]159-72
[84 -421 2112]16734
[42 -379 3424]167225
[28 -421 6336]16734
[14 -197 2784]167-225
[16 -37 96]167-282
[88 -265 800]175-81
[4 9 64]175-645
[8 9 32]17581
[2 4 96]176-49
[90 268 800]176-49
[30 -92 288]176-337
[30 -332 3680]176465
[30 -452 6816]17649
[10 12 32]176-49
[18 -92 480]176-337
[2 3 96]183125
[6 3 32]183125
[38 -125 416]183-82
[16 -227 3232]1833
[2 2 96]188126
[94 -658 4608]188126
[48 -146 448]188200
[48 -530 5856]188526
[6 2 32]188126
[6 14 64]188526
[142 350 864]188370
[8 18 64]188-200
[12 14 32]188126
[14 34 96]188-370
[2 1 96]191143
[6 1 32]191143
[32 -417 5440]191-353
[8 33 160]191-698
[20 -223 2496]191-698
[18 -95 512]191353
[18 -257 3680]191398
[2 0 96]1920
[2 8 128]19296
[2 16 224]1920
[4 8 64]1921072
[52 152 448]192112
[6 0 32]1920
[6 24 128]192-800
[8 8 32]19296
[24 -120 608]192800
[12 24 64]192112
[14 16 32]1920
[100 -1301 16928]199-219
[50 -651 8480]199405
[10 11 32]199-219
[10 21 64]199405
[104 -1145 12608]207139
[478 1113 2592]207-435
[26 -391 5888]207-139
[108 -973 8768]215-75
[54 -595 6560]215-1032
[36 -397 4384]215546
[6 13 64]215-1032
[12 13 32]21575
[110 -330 992]220152
[110 -550 2752]220152
[4 6 64]220-1953
[56 -506 4576]2201240
[28 -422 6368]220152
[10 10 32]220-152
[170 390 896]2201240
[112 -785 5504]223412
[4 17 128]2231124
[8 17 64]2231124
[14 15 32]223412
[116 -581 2912]23167
[4 5 64]231736
[40 -123 384]2311725
[30 -453 6848]23167
[24 -123 640]2311725
[120 -361 1088]239243
[248 617 1536]2391829
[48 -151 480]239-1742
[30 -151 768]239-1742
[24 -361 5440]239243
[198 457 1056]2391829
[2 4 128]24028
[122 364 1088]24028
[4 4 64]2401660
[60 -180 544]240-1252
[60 -300 1504]240644
[6 12 64]240-644
[8 4 32]24028
[32 -356 3968]2402292
[10 20 64]2401252
[12 12 32]24028
[16 -36 96]240-2684
[16 -228 3264]2403556
[2 3 128]247-499
[62 -931 13984]247773
[8 3 32]247-499
[2 2 128]252-210
[126 -882 6176]252-210
[4 2 64]252-423
[42 -126 384]2522078
[42 -210 1056]2522750
[8 2 32]252-210
[24 -126 672]2522078
[14 14 32]252-210
[18 -258 3712]252-3726
[2 1 128]255-334
[4 1 64]255-255
[44 -575 7520]2552196
[8 1 32]255-334
[14 33 96]2552196
[2 0 128]2560
[2 8 160]256-32
[4 0 64]2560
[4 16 128]256-1824
[8 0 32]2560
[8 16 64]256-1824
[8 32 160]256-896
[26 -288 3200]256-896
[26 -392 5920]25632
[16 16 32]2560
[20 -288 4160]2560
[132 -1717 22336]263504
[66 -331 1664]263-6278
[408 949 2208]263-6278
[22 -331 4992]263-504
[136 -1497 16480]271-276
[74 217 640]2714697
[28 -423 6400]271276
[212 487 1120]271-4697
[140 -1261 11360]279151
[70 -211 640]2793591
[268 621 1440]2793591
[20 -301 4544]279151
[142 -426 1280]284-334
[142 -710 3552]284-334
[72 -362 1824]2843426
[72 -938 12224]284-1965
[450 1046 2432]2843426
[6 26 160]2843634
[58 -182 576]284-1058
[36 -182 928]284-1058
[30 -154 800]284-3634
[30 -454 6880]284-334
[24 -362 5472]284-334
[240 554 1280]2841965
[78 -239 736]2871051
[48 -241 1216]287-1551
[338 785 1824]2871051
[18 -271 4096]2871052
[148 -741 3712]295-684
[38 -421 4672]295-4595
[10 5 32]295684
[226 517 1184]2955301
[152 -457 1376]303-381
[4 9 96]303-9990
[6 9 64]303-9990
[26 -393 5952]303-381
[2 4 160]304365
[154 460 1376]304365
[10 4 32]304365
[22 -332 5024]304-365
[2 3 160]3111033
[52 -157 480]311-6283
[10 3 32]3111033
[12 29 96]3116283
[16 35 96]311-8729
[240 547 1248]3111472
[2 2 160]316-368
[80 -242 736]316-400
[80 -882 9728]3168250
[380 882 2048]316-8250
[10 2 32]316-368
[310 718 1664]316-400
[20 -302 4576]316368
[2 1 160]319116
[50 -159 512]319-5639
[10 1 32]319116
[32 -353 3904]3195639
[20 -289 4192]31910836
[2 0 160]3200
[2 8 192]320-824
[4 8 96]32013192
[84 248 736]3204600
[6 8 64]32013192
[54 -272 1376]320-4992
[54 -704 9184]3205888
[10 0 32]3200
[28 -424 6432]320824
[14 32 96]3205888
[254 584 1344]320-4600
[18 -272 4128]3200
[164 -2133 27744]327-72
[82 -1067 13888]3276787
[56 -619 6848]327-8981
[42 -213 1088]3278981
[282 651 1504]327-6787
[24 -363 5504]32772
[168 -1849 20352]335-215
[766 1785 4160]335-5334
[6 7 64]3355334
[6 25 160]335-285
[36 -185 960]335285
[30 -455 6912]335215
[86 -947 10432]343-12430
[422 979 2272]34312430
[22 -333 5056]343196
[174 -522 1568]348-186
[174 -870 4352]348-186
[4 6 96]348-17846
[6 6 64]348-17846
[44 -486 5376]348-2661
[12 6 32]348186
[26 -394 5984]348-186
[268 614 1408]34813061
[4 17 160]35110224
[60 -303 1536]3511215
[352 815 1888]351-10224
[20 -303 4608]351-316
[180 -901 4512]3591478
[4 5 96]3592996
[60 -901 13536]359-2996
[12 5 32]359-1478
[184 -553 1664]367237
[376 937 2336]36713158
[28 -425 6464]367237
[296 681 1568]36713158
[2 4 192]368-932
[4 4 96]36810044
[92 -276 832]368-1860
[92 -460 2304]3689636
[62 -188 576]3683644
[62 -684 7552]3688388
[62 -932 14016]368-10044
[8 12 64]368-9636
[48 -244 1248]368-8388
[12 4 32]368-932
[12 28 96]368-3644
[324 748 1728]368-1860
[24 -364 5536]368932
[282 644 1472]368-21540
[2 3 192]375-283
[94 -1411 21184]3759185
[6 3 64]375-9185
[12 3 32]375-283
[2 2 192]3801900
[4 2 96]380-1732
[6 2 64]380-1732
[6 14 96]380-9092
[60 -190 608]3807340
[38 -190 960]3807340
[12 2 32]3801900
[16 34 96]380-15412
[22 -334 5088]380-1900
[20 30 64]380-18337
[2 1 192]383961
[4 1 96]38310380
[6 1 64]38310380
[64 -833 10848]383-19070
[12 1 32]383961
[14 31 96]383-19070
[2 0 192]3840
[2 8 224]3841872
[4 0 96]3840
[4 16 160]384-15232
[6 0 64]3840
[6 24 160]384-17680
[10 24 96]384-17680
[394 912 2112]38415232
[12 0 32]3840
[30 -456 6944]384-1872
[20 -304 4640]3840
[22 32 64]3840
[98 -491 2464]391-30504
[8 11 64]39130504
[26 -395 6016]3911840
[200 -2201 24224]3991771
[50 -551 6080]3995982
[14 7 32]3991771
[310 711 1632]399-18220
[102 -307 928]40719594
[68 -749 8256]40715581
[6 13 96]407-27430
[8 19 96]40715581
[366 845 1952]40719594
[24 -365 5568]407-1514
[206 -1030 5152]4122422
[104 -522 2624]4129467
[104 -1354 17632]412-4314
[8 10 64]412-9467
[14 6 32]412-2422
[338 778 1792]4124314
[28 -426 6496]4122422
[110 -335 1024]415-2563
[10 15 64]4152563
[22 -335 5120]415-4630
[212 -1061 5312]423190
[72 -219 672]4237320
[12 27 96]423-7320
[14 5 32]423-190
[18 27 64]423-5979
[4 9 128]431-31856
[80 -247 768]431-14559
[8 9 64]431-31856
[10 23 96]43114559
[30 -457 6976]431323
[2 4 224]432-308
[6 12 96]43227915
[14 4 32]432-308
[26 -396 6048]432308
[2 3 224]439-4140
[70 -221 704]4393288
[44 -221 1120]4393288
[14 3 32]439-4140
[20 29 64]439-17914
[2 2 224]444-1500
[112 -338 1024]444-16191
[112 -1234 13600]44432580
[74 -222 672]4446228
[74 -370 1856]44424036
[8 18 96]444-24036
[10 14 64]44432580
[12 18 64]44416191
[14 2 32]444-1500
[14 30 96]444-6228
[24 -366 5600]4441500
[2 1 224]447-1524
[14 1 32]447-1524
[16 33 96]44746612
[22 31 64]44730999
[2 0 224]4480
[4 8 128]44830528
[8 8 64]44830528
[56 -280 1408]448-6592
[14 0 32]4480
[16 8 32]4481536
[16 24 64]44815168
[22 -336 5152]4480
[114 -1483 19296]45526520
[696 1621 3776]455-60379
[14 21 64]45526520
[28 -427 6528]455-2281
[1054 2457 5728]463-10490
[58 -871 13088]463-10490
[16 7 32]463-1473
[118 -1299 14304]471-29157
[10 13 64]471-29157
[26 -397 6080]4712024
[4 6 128]476-34700
[738 1718 4000]47660350
[6 26 192]47637838
[90 -278 864]476-28206
[60 -902 13568]47634700
[10 22 96]47628206
[12 26 96]47637838
[16 6 32]4763762
[18 26 64]476-33218
[30 -458 7008]476-3762
[4 17 192]47915385
[80 -401 2016]47927490
[8 17 96]479-27490
[12 17 64]47915385
[24 -367 5632]4799085
[4 5 128]48717251
[62 -933 14048]487-17251
[16 5 32]4875535
[6 9 96]495-61232
[62 -311 1568]495-10929
[16 23 64]495-24036
[18 9 32]4952193
[4 4 128]49636488
[124 -372 1120]49619944
[124 -620 3104]49616216
[8 4 64]49636488
[64 -708 7840]49614936
[10 12 64]496-16216
[50 -252 1280]496-14936
[14 20 64]496-19944
[16 4 32]4963880
[20 28 64]49632760
[28 -428 6560]496-3880