kalmar/PropertyT.jl
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better printing

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kalmar 2017-04-01 14:22:30 +02:00
parent 41e53a598a
commit 028979bfd1
1 changed files with 6 additions and 3 deletions
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src/PropertyT.jl
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@ -138,6 +138,8 @@ function compute_κandA(sdp_constraints, Δ::GroupAlgebraElement, solver::Abstra
return κ, A return κ, A
end end
Kazhdan_from_sgap(λ,N) = sqrt(2*λ/N)
function check_property_T(name::String, generating_set::Function, function check_property_T(name::String, generating_set::Function,
solver, upper_bound, tol, radius) solver, upper_bound, tol, radius)
@ -171,9 +173,10 @@ function check_property_T(name::String, generating_set::Function,
spectral_gap = spectral_gap.lo spectral_gap = spectral_gap.lo
end end
if spectral_gap > 0 if spectral_gap > 0
Kazhdan_κ = sqrt(2*spectral_gap/S) @show spectral_gap
Kazhdan_κ = Float64(trunc(Kazhdan_κ, 12)) Kazhdan_const = Kazhdan_from_sgap(spectral_gap, S)
info(logger, "κ($name, S) ≥ $Kazhdan_κ: Group HAS property (T)!") Kazhdan_const = Float64(trunc(Kazhdan_const, 12))
info(logger, "κ($name, S) ≥ $Kazhdan_const: Group HAS property (T)!")
else else
spectral_gap = Float64(trunc(spectral_gap, 12)) spectral_gap = Float64(trunc(spectral_gap, 12))
info(logger, "λ($name, S) ≥ $spectral_gap: Group may NOT HAVE property (T)!") info(logger, "λ($name, S) ≥ $spectral_gap: Group may NOT HAVE property (T)!")