
ALT Headline: Erdős Problem 354(i) — PROVED. Conjectures announcement for Erdős 354(i). For positive alpha and beta with irrational ratio, define a_n=floor(2^n alpha) and b_n=floor(2^n beta). Every sufficiently large integer is a finite sum of indexed terms, each used at most once. An indexed table for alpha=sqrt(2), beta=sqrt(3) shows rows 1,2,5,11,22 and 1,3,6,13,27. Circles mark a_2=5, a_4=22 and b_1=3. Index sets S={2,4} and T={1} give a_2+a_4+b_1=30. Equal values at different indices remain distinct terms. Formally verified in Lean. Credit: JenW1N. Historical caption: OPEN FOR 55 YEARS · 1971–2026.

ALT Headline: Lonely-runner spectrum — CASE PROVED. Four speeds with restricted gcd conditions. Conjectures announcement for the restricted four-speed lonely-runner spectrum. L(V) is the maximum over time of the minimum nearest-integer distance of vt. The theorem gives L≥1/4 or L=s/(4s+k), with integer parameters 1≤k≤4 and k≤s. Speeds are distinct positive integers with overall gcd 1 and pairwise gcd at most 2. For speeds 1,2,3,4 at time 1/5, a unit-circle diagram places four points at successive fifths, with the two nearest arcs to the fixed origin highlighted. Below it, the exact piecewise-linear minimum-distance function over one period reaches 1/5 at times 1/5,2/5,3/5,4/5. Formally verified in Lean. Credit: JenW1N.

ALT Headline: Wilf’s inequality — CASE PROVED. Conductor at most four times multiplicity. Conjectures announcement for Wilf’s inequality: c≤4m implies eL≥c for proper numerical semigroups. Definitions: m is the smallest positive element, c the first integer after the final gap, e the number of minimal generators, and L the number of elements below c, including zero. Two rows show membership in the semigroup generated by 5 and 6 from zero through 29, using solid green dots for members and hollow gray dots for gaps. The final gap is 19, with every integer from 20 onward present. The example has m=5,e=2,L=10, so eL=20=c=4m. Formally verified in Lean. Credit: Elias. Historical caption: 48-YEAR-OLD CONJECTURE · SINCE 1978.

ALT Headline: Polynomial minimal graphs — PROVED. Dimension eight, all polynomial degrees. Conjectures announcement for polynomial minimal graphs in dimension eight. An everywhere-defined real polynomial P in eight variables satisfying div(gradient P/sqrt(1+||gradient P||²))=0 must have the affine form P(x)=a·x+b. No input-degree restriction applies. Two wireframe diagrams show a non-affine candidate excluded by the theorem and an affine plane, the only possible form. These are schematic two-dimensional slices of higher-dimensional graphs. Formally verified in Lean. Credit: JenW1N. Historical caption: 29-YEAR-OLD QUESTION · SINCE 1997.

ALT Headline: Erdős Problem 1057 — PROVED. Conjectures announcement for Erdős 1057. The counting theorem is C(x)=x^(1-o(1)), where C(x) counts Carmichael numbers at most x. For each epsilon>0, eventually C(x)≥x^(1-epsilon). A factorization diagram connects 561 to 3,11,17. Their predecessors 2,10,16 divide 560, and all 320 coprime residue classes satisfy a^560≡1 modulo 561. Ivory background, bold serif headline, large green verdict and an outlined Verified in Lean badge. Formally verified in Lean. Credits: JenW1N, Liam Kruer and gus.






















