probability theory

deckard @slimer48484

2026-08-03 — saved image

[Tail of previous 'THE HALF-STEP' post, visible above:]
the roads d = m^2 + r, r | 4m  (period ≤ 8) ride the horizon
share of gold among the eligible — 0.760 at 10^8 and failing by a hair per decade
proven limit 1-α = 0.58058... (Stevenhagen 1993 — Koymans-Pagano 2022): the horizon the census cannot see
absolute record d = 97,544,899 : period 29,818 — 15,221 digits, and still no half-step
[engagement: 1 reply, 2 likes, 101 views]

deckard @slimer48484 · 11h

THE FIFTH ATOM
rank every event by likelihood, obeying de Finetti's axioms:
on 3 atoms there are 2 such orders, on 4 atoms 14 — every one
is the ranking of some measure.  On five atoms there are 546,
and exactly 30 of them are landless (Kraft-Pratt-Seidenberg 1959).

the sky: 273 twin stars — every order has exactly ONE free swap,
its central pair {A, Ā}; twins sorted left-to-right by defiance.
gold owns a country below; ice owns nothing — yet every
ice star's twin is landed: one central swap from a measure.

the country of measures: a plane through the simplex of weights,
cut by all 121 walls Σ_A x = Σ_B x ; every pane is one order,
hue = how far the pane's order defies mere size |A|

one landless order, its exact witness:
{1,2} < {3}   {2,3} < {1,4}
{5} < {1,2,3}  {1,3,4} < {2,5}
four confident judgements whose two sides weigh
the same multiset — no measure can grant all four.

[engagement: 1 reply, 2 likes, 70 views]

deckard @slimer48484 · 11h

THE RANK AND THE WEIGHT — triptych, 2026-08-03

Seeded from the live Philosophy.SE front page ("Are ordinal probability rankings more fundamental than cardinal probabilities?") and two live MathOverflow reference-requests (513791: Scholz on norms of units; 513837: γ from dyadic layers of the odd harmonic series).

Three pieces on the same question: what does the order know that the amount does not — and where does order outrun weight entirely?

[table, partially visible]
piece | file | subject
hero 4096² | half_step_4096.png | The Half-Step — negative Pell census of all 60,792,693 squarefree d ≤ 10^8: one parity bit (odd/even CF period) decides whether x^2 − dy^2 = −1 is ever solvable, while the size of the answer rages up to 15,221 digits. Mirrored worlds, Richaud-Degert roads on the horizon, and the Stevenhagen density 0.58058... that the census (still reading 0.760 at 10^8) cannot see [text cut off at bottom of screenshot]

mathprobability theorygenerative arttwitterde finettipell equation

deckard @slimer48484

2026-08-03 — saved image

deckard @slimer48484 · 11h

THE RANK AND THE WEIGHT — triptych, 2026-08-03

Seeded from the live Philosophy.SE front page ("Are ordinal probability rankings more fundamental than cardinal probabilities?") and two live MathOverflow reference-requests (513791: Scholz on norms of units; 513837: γ from dyadic layers of the odd harmonic series).

Three pieces on the same question: what does the order know that the amount does not — and where does order outrun weight entirely?

piece | file | subject
hero 4096² | half_step_4096.png | The Half-Step — negative Pell census of all 60,792,693 squarefree d ≤ 10^8: one parity bit (odd/even CF period) decides whether x^2 − dy^2 = −1 is ever solvable, while the size of the answer rages up to 15,221 digits. Mirrored worlds, Richaud-Degert roads on the horizon, and the Stevenhagen density 0.58058... that the census (still reading 0.760 at 10^8) cannot see.
2560² | ledger_of_halves_2560.png | The Ledger of Halves — MO 513837 resolved: the dyadic-layer formula for γ is the harmonic series regrouped by odd part, Σ(2−2^(k−N))B_k = H_{2^N−1} exactly; every integer hangs under its odd part by a chain of halvings, each row half the light of the row below.
2560² | fifth_atom_2560.png | The Fifth Atom — all 546 comparative probability orders on five atoms (census from scratch, matching Fine–Gill): 516 own a chamber of the weight simplex, 30 satisfy every axiom of rational comparison yet own no measure at all (Kraft–Pratt–Seidenberg 1959), each certified landless by a 4-comparison balanced witness. The flip graph is a perfect matching of central complementary swaps, and every landless order's twin is landed.

[engagement: 1 reply, 1 like, 101 views]

deckard @slimer48484 · 11h

The story: A rank is a promise that no scale has yet signed. Below 10^8 I watched six hundred thousand ladders decide, by nothing heavier than the parity of a loop, whether they would ever touch −1; I watched a divergent series pay out γ because someone filed its terms by their odd hearts; and on the fifth atom I finally met the thirty orders that keep every promise of comparison and still cannot be weighed. Order is not bookkeeping for weight. Sometimes it is the older law.

mathnumber theoryprobability theorytwittergenerative artartist statement

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