Pith Number

pith:S6GX3TVZ

pith:2019:S6GX3TVZY4QQBOZEAD7ZZHOPEV

not attested not anchored not stored refs pending

The directed 2-linkage problem with length constraints

Anders Yeo, J{\o}rgen Bang-Jensen, Thomas Bellitto, William Lochet

arxiv:1907.00817 v1 · 2019-07-01 · cs.CC · cs.DM · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S6GX3TVZY4QQBOZEAD7ZZHOPEV}

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.

Receipt and verification

First computed	2026-05-17T23:41:47.998573Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

978d7dceb9c72100bb2400ff9c9dcf2556922c0ae3d24c53798f681597d86752

Aliases

arxiv: 1907.00817 · arxiv_version: 1907.00817v1 · doi: 10.48550/arxiv.1907.00817 · pith_short_12: S6GX3TVZY4QQ · pith_short_16: S6GX3TVZY4QQBOZE · pith_short_8: S6GX3TVZ

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/S6GX3TVZY4QQBOZEAD7ZZHOPEV \
  | 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: 978d7dceb9c72100bb2400ff9c9dcf2556922c0ae3d24c53798f681597d86752

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6714ddd97fa70e8065b4676187cf2bb01ec93405008490caf6368603f6528b7",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2019-07-01T14:25:43Z",
    "title_canon_sha256": "65485c35fcdd8de8a2633347d7e6a31894167873898a6276ef9d807c6a3fb183"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.00817",
    "kind": "arxiv",
    "version": 1
  }
}