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https://github.com/kalmarek/SmallHyperbolic
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Numerical values for orientation.
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@ -1,6 +1,7 @@
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using RamanujanGraphs
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using RamanujanGraphs
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using LinearAlgebra
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using LinearAlgebra
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using Nemo
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using Nemo
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using ArgParse
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using Logging
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using Logging
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using Dates
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using Dates
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@ -15,24 +16,6 @@ function SL2p_gens(p)
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@assert isone(a^10)
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@assert isone(a^10)
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@assert isone(b^10)
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@assert isone(b^10)
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a, b
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end
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elseif p == 41
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a, b = let
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a = SL₂{p}([19 26; 29 16])
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b = SL₂{p}([0 20; 2 6])
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@assert isone(a^10)
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@assert isone(b^10)
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a, b
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end
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elseif p == 59
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a, b = let
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a = SL₂{p}([32 12; 20 2])
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b = SL₂{p}([14 18; 45 20])
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@assert isone(a^10)
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@assert isone(b^10)
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a, b
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a, b
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end
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end
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elseif p == 109
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elseif p == 109
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@ -72,9 +55,42 @@ function adjacency(ϱ, CC, a, b)
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return sum(A^i for i = 1:4) + sum(B^i for i = 1:4)
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return sum(A^i for i = 1:4) + sum(B^i for i = 1:4)
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end
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end
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function parse_our_args()
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s = ArgParseSettings()
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@add_arg_table! s begin
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"-p"
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help = "the prime p for which to use PSL(2,p)"
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arg_type = Int
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required = true
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"-a"
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help = "generator a (optional)"
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"-b"
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help = "generator b (optional)"
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"--ab"
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help = "array of generators a and b (optional)"
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end
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result = parse_args(s)
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for key in ["a", "b", "ab"]
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val = get(result, key, "")
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if val != nothing
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result[key] = eval(Meta.parse(val))
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else
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delete!(result, key)
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end
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end
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val = get(result, "ab", "")
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if val != ""
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result["a"] = val[1]
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result["b"] = val[2]
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end
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result
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end
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parsed_args = parse_our_args()
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const p = try
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const p = try
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@assert length(ARGS) == 2 && ARGS[1] == "-p"
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p = parsed_args["p"]
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p = parse(Int, ARGS[2])
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RamanujanGraphs.Primes.isprime(p)
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RamanujanGraphs.Primes.isprime(p)
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p
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p
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catch ex
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catch ex
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@ -90,6 +106,10 @@ open(joinpath("log", LOGFILE), "w") do io
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CC = AcbField(128)
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CC = AcbField(128)
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a,b = SL2p_gens(p)
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a,b = SL2p_gens(p)
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a = SL₂{p}(get(parsed_args, "a", a))
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b = SL₂{p}(get(parsed_args, "b", b))
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@info "a = " a
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@info "b = " b
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Borel_cosets = let p = p, (a,b) = (a,b)
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Borel_cosets = let p = p, (a,b) = (a,b)
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SL2p, sizes =
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SL2p, sizes =
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@ -98,8 +118,7 @@ open(joinpath("log", LOGFILE), "w") do io
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RamanujanGraphs.CosetDecomposition(SL2p, Borel(SL₂{p}))
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RamanujanGraphs.CosetDecomposition(SL2p, Borel(SL₂{p}))
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end
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end
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all_large_ev = []
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all_large_evs = []
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let α = RamanujanGraphs.generator(RamanujanGraphs.GF{p}(0))
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let α = RamanujanGraphs.generator(RamanujanGraphs.GF{p}(0))
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for j = 0:(p-1)÷4
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for j = 0:(p-1)÷4
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@ -114,9 +133,9 @@ open(joinpath("log", LOGFILE), "w") do io
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@time ev = let evs = safe_eigvals(adj)
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@time ev = let evs = safe_eigvals(adj)
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_count_multiplicites(evs)
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_count_multiplicites(evs)
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end
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end
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all_large_evs = vcat(all_large_evs, [Float64(real(x[1])) for x in ev[1:2]])
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@info "Principal Series Representation $j" ev[1:2] ev[end]
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@info "Principal Series Representation $j" ev[1:2] ev[end]
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all_large_ev = vcat(all_large_ev, ev[1:2])
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catch ex
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catch ex
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@error "Principal Series Representation $j failed" ex
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@error "Principal Series Representation $j failed" ex
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ex isa InterruptException && rethrow(ex)
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ex isa InterruptException && rethrow(ex)
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@ -148,19 +167,21 @@ open(joinpath("log", LOGFILE), "w") do io
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@time ev = let evs = safe_eigvals(adj)
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@time ev = let evs = safe_eigvals(adj)
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_count_multiplicites(evs)
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_count_multiplicites(evs)
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end
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end
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all_large_evs = vcat(all_large_evs, [Float64(real(x[1])) for x in ev[1:2]])
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@info "Discrete Series Representation $k" ev[1:2] ev[end]
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@info "Discrete Series Representation $k" ev[1:2] ev[end]
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all_large_ev = vcat(all_large_ev, ev[1:2])
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catch ex
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catch ex
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@error "Discrete Series Representation $k : failed" ex
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@error "Discrete Series Representation $k : failed" ex
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ex isa InterruptException && rethrow(ex)
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ex isa InterruptException && rethrow(ex)
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end
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end
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end
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end
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print(all_large_ev)
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# all_large_ev = sort(all_large_ev, rev=true)
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# lambda = all_large_ev[2]
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# print(lambda, " ", (lambda - 3)/5, " ", acos((lambda-3)/5), " ", acos((lambda-3)/5)/pi*180)
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end
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end
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all_large_evs = sort(all_large_evs, rev=true)
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λ = all_large_evs[2]
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ε = (λ - 3)/5
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α = acos(ε)
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α_deg = α/pi*180
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@info "Numerically" λ ε α α_deg
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end # with_logger
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end # with_logger
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end # open(logfile)
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end # open(logfile)
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