Pith Number

pith:FC3PXFFS

pith:2015:FC3PXFFSZCTWNXY7NIBUGO5THY

not attested not anchored not stored refs pending

Variable and value elimination in binary constraint satisfaction via forbidden patterns

David A. Cohen, Guillaume Escamocher, Martin C. Cooper, Stanislav Zivny

arxiv:1502.03796 v1 · 2015-02-12 · cs.CC · cs.AI · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FC3PXFFSZCTWNXY7NIBUGO5THY}

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	2026-05-18T01:55:32.765454Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28b6fb94b2c8a766df1f6a03433bb33e14e5334144821067eafbb923fa53d018

Aliases

arxiv: 1502.03796 · arxiv_version: 1502.03796v1 · doi: 10.48550/arxiv.1502.03796 · pith_short_12: FC3PXFFSZCTW · pith_short_16: FC3PXFFSZCTWNXY7 · pith_short_8: FC3PXFFS

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/FC3PXFFSZCTWNXY7NIBUGO5THY \
  | 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: 28b6fb94b2c8a766df1f6a03433bb33e14e5334144821067eafbb923fa53d018

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c99db968ac127f58a354e3fecf7e373f17056cbe177506292e04315e9d3ae01d",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2015-02-12T20:22:44Z",
    "title_canon_sha256": "4ba94b750ff9e1f422d4a4ddbe90b4ecb1b529994b961d86b3caa716c35ecc90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.03796",
    "kind": "arxiv",
    "version": 1
  }
}