Pith Number

pith:LITOT3CU

pith:2025:LITOT3CUVR32M3GB5PHMLPRQ5V

not attested not anchored not stored refs pending

Approximating 1-in-3 SAT by linearly ordered hypergraph 3-colouring is NP-hard

Andrei Krokhin, Danny Vagnozzi

arxiv:2508.14606 v1 · 2025-08-20 · cs.CC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LITOT3CUVR32M3GB5PHMLPRQ5V}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

Towards infinite PCSP: a dichotomy for monochromatic cliques

Receipt and verification

First computed	2026-07-05T11:56:35.332613Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a26e9ec54ac77a66cc1ebcec5be30ed65d3ece5ae3e54fe9c7b88da953bcecb

Aliases

arxiv: 2508.14606 · arxiv_version: 2508.14606v1 · doi: 10.48550/arxiv.2508.14606 · pith_short_12: LITOT3CUVR32 · pith_short_16: LITOT3CUVR32M3GB · pith_short_8: LITOT3CU

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/LITOT3CUVR32M3GB5PHMLPRQ5V \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 5a26e9ec54ac77a66cc1ebcec5be30ed65d3ece5ae3e54fe9c7b88da953bcecb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3e25b06acbe5a325ba26b7344d62d363c48a052b20ab12bc989a9c317a605c6",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2025-08-20T10:47:00Z",
    "title_canon_sha256": "4f0e3deb3ee2fb666378d4fccf98ce84a4ac2d4bfb0151ddbe41f84bdb331549"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.14606",
    "kind": "arxiv",
    "version": 1
  }
}