Research notes on every problem, and a library of the papers behind them. Built from the open erdos repository.
Updated
Elementary grade reasoning
This account accompanies the elementary grade. On 2026-10-16 UTC the grader reproduced the indispensable reasoning in the original weak-step keeper and proof-coverage keeper, against the unchanged inputs named in the subject map. It is an assessment of those derivations, not a new proof offered to rescue them. All classical premises and reading limits in the grade apply.
The source method is OpenAI's unrefereed manuscript Weighted dilation graphs, smooth shifted primes and totient fibers, 24 September 2026 release. Original project reconstruction and parameter checks are credited to Plasma AI.
E1: witness, polynomial construction and five instances
The literal witness has one object of weight 1, no bad primes, , , , . The empty intersection condition holds; the prime density assumptions are vacuous. The avoiding mass is 1. Every asserted remainder level is less than 1 and therefore contributes zero. A supported polynomial in no variables has no permitted constant monomial, so also cannot majorize 1. This reproduces the report's disproof without an unspecified constant or asymptotic computation.
For , the blocks partition the indicated prime set. With even and present bad indicators in a block, the alternating sum through degree is 1 for and otherwise. Thus and , the sum of degree- monomials. Telescoping proves
Each correction has exactly one block beyond its upper truncation. These supports are mutually disjoint and disjoint from 's support, giving coefficients in for all three polynomials. The exponent sum is ; a correction adds at most 1. Support is at most , hence at most the asserted remainder level . For , the prime set is empty and the constant polynomials give the same restricted conclusion with the retained .
Under the auxiliary independent Bernoulli law, and . For sufficiently large , factorial decay bounds by a constant times uniformly in the number of blocks. At the corresponding odd factorial series is bounded. Consequently and have the required bounds. This independence is used only to evaluate monomial main terms. In the actual population each polynomial's error is bounded by the single sum of absolute remainders, because its coefficients have magnitude at most
- No independence of actual events or unproved probability approximation enters.
The five instance checks survive separately:
- For integers in an arbitrary interval and a reduced class modulo , omit primes dividing . CRT counts have error at most 1; the main term is length times .
- In a per-prime sieve, and squarefree has all primes below . Thus has exactly one large prime and different pairs give different products. The total error is bounded by the Type I sum without extra divisor multiplicity.
- The preliminary sieve has density on odd primes and for sufficiently small fixed .
- The ordinary rough count has density , the same level and remainders. Its error is .
- In balanced boxes, for odd primes, uniformly over assignments and masks. The fixed- upper bound applies at level .
The literal defect reaches none of these instances.
E2: restrictions, characters and the last choice of precision
Write , . A full cell meeting the ambient range has lower endpoint at least ; there are cells. The ordinary sieve gives
For each fixed , this is positive and asymptotic to . Each actual test selects a subset of the -rough integers of the full cell. Hence exactly, before any restriction or choice of .
A principal character modulo equals 1 on the support. On a full cell, unweighted cancellation is exact. The variation of is . Summing the keeper's cell bounds yields ; at most two partial cells add . For this is .
For a nonprincipal character, the quoted SW theorem gives at , after summing reduced classes. Partial summation gives
Taking supplies arbitrary fixed accuracy. It is an absolute bound on every interval, not a relative short-prime asymptotic. For a rough integer, sort all its prime factors, including repetitions. There are boundedly many factors. Once the prefix is fixed, order, roughness and product restrictions leave a single last-prime interval. The total reciprocal prefix mass is bounded in terms of . Thus the same cancellation holds for the actual test, including induced nonprincipal characters.
For the proxy, the reduced-class sieve on each partial cell has main term and errors . Summing against the character cancels the common main term. Partial summation and all cells give
These estimates retain the class-count, twist and cell-count losses. All coefficients remain bounded by 1 while is chosen after P's . The strongest interval/imprimitive-character attack therefore fails on the actual quantitative claim.
E3: densities, normalization and mesh
The density uses coordinate measure on the simplex, not Euclidean surface measure. On the stated fixed compact, denominators are at least and only boundedly many terms occur. Dominated convergence proves continuity; at , , the integration domain shrinks to zero measure. No continuity across is asserted.
PNT accuracy gives relative error in a logarithmic cell. Prime-square contributions are . Squarefree products have exactly ordered lists; dropping distinctness only increases the upper count. Fixing the first primes leaves a last-prime interval with logarithmic lower size at least . Mertens' reciprocal-prime measure has interval error . A fixed cube mesh gives the limiting integral with error ; hyperplane slabs have measure and the shifted cutoff strip has measure . Choose first, then . This establishes the claimed uniformity without exchanging limits.
Balanced cells have , hence eventually. For an unbalanced cofactor, and ; the compact suffices. This uses the factor's size only, so the report correctly distinguishes the source's nonprime wording from the narrower stated application.
Permutation of simplex coordinates has absolute Jacobian 1. Choosing the unique minimum coordinate in ways changes to . Therefore
Summing and removing proves the identity. For both sides reduce to , checking the normalization without substituting a special case for the proof. The endpoint density has left limit 2 and zero integration mass.
For the ordinary lower count, an integer with multiplicities receives weight from all its ordered lists. Restricting prefixes to keeps the last prime above the cutoff. PNT followed by gives . The ordinary E1 upper sieve and Mertens bound the limsup by . The directions of both limits are correct.
Uniform continuity makes the total bin-supremum error at most , chosen below at a fixed mesh. The weighted residual additionally uses the consumer's conditional replacement and sieve bounds. The keeper states this dependency. Its optional Buchstab cross-check follows by scaling and for , with on .
E4: exact mass law and exceptional-slot quantifiers
Expanding ordered lists, including repeated primes, gives the exact law
The exceptional integer is free of group primes because it is -rough; all group primes are below . Unique separation of the P-part justifies the second equality. No approximate independence is assumed.
For each fixed later slot, its band's primes eventually exceed , so , while . Uniform positive bounds for the and bands give fixed polynomial bounds for . Fixing the exceptional divisor leaves at most the band permutations, giving . On it has only prime factors above , so its divisor choices give the subexponential pointwise bound. The support restrictions give .
For a group, the marked harmonic mass is . The second factor is at least 1. Summable errors give the claimed asymptotic and exact lower product. Tilting by keeps each group's tilted mass bounded, since . The product of bounds is , proving the stated tail.
Conditioning on all but a pure slot of band 0 yields the upper probability by Chebyshev. For the lower bound, the keeper fixes a finite prefix before the exceptional slot, controls its deviation by , and bounds both the actual and nominal tails by . The P-part is at most with probability eventually at least . Thus the remaining deviation is in . The desired fixed logarithmic interval for the free prime lies at least inside its band. PNT gives probability . This proves both local comparisons with constants independent of the later fixed exceptional index. Finally
cancels the exceptional factor exactly. The attempted moving-index counterexample is outside the quantified assertion.
E5 and the balanced interface
For real fixed , the local divisor series is . Positivity and Mertens give the stated moments. A fixed -fold convolution is bounded by a logarithmic factor times ; its square sum and reciprocal-index variant follow. Cauchy–Schwarz supplies the mixed and shifted moments actually consumed.
Integration by parts in fixed dimension gives . Integrated mass is and the tail beyond is . The frequency exponent is fixed before accuracy. For the separate transition factors, total variation is , the union bound pays tail errors, and bounds retained twists by . The two arguments are not conflated.
The elementary bounds are and .
For Type I, extracting a pure band-0 prime gives , , and . Write an induced character's squarefree odd modulus as with primitive conductor and . The large-conductor bound after Cauchy–Schwarz and the large sieve is
Dyadic and squarefree- sums cost at most . Choose . For small conductors, SW includes the residue-class loss; after all sums the bound is . Choose afterwards. The principal coprimality error is . These are the existing keeper's estimates and use no P.
In the balanced interface the whole exceptional integer remains in ; its possible repeated prime factors do not change the count of unit solutions to . For each odd sieve prime, the disjoint bad sets have and pairs. CRT and the elementary sums give error per assignment. The assignment identities , and then give when . The Euler main term is bounded by . E4 makes this with constants fixed before the later gap. Masks reproduce damping by distinct additional group primes, not by multiplicity. After the two prime proxies and dyads the bound is .
This final calculation depends on balance. It supplies no unrestricted dyadic theorem. All preceding reproductions preserve the original classical-source and P qualifications and add no new mathematical premise.