Pith Number

pith:4H5Y5T73

pith:2011:4H5Y5T73OUBDQDR6657PKW7XGR

not attested not anchored not stored refs pending

Complexity of the path avoiding forbidden pairs problem revisited

Jakub Kov\'a\v{c}

arxiv:1111.3996 v3 · 2011-11-17 · 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{4H5Y5T73OUBDQDR6657PKW7XGR}

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	2026-05-18T02:21:29.235826Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1fb8ecffb7502380e3ef77ef55bf7347c90d43e844156be43e356bb5401af37

Aliases

arxiv: 1111.3996 · arxiv_version: 1111.3996v3 · doi: 10.48550/arxiv.1111.3996 · pith_short_12: 4H5Y5T73OUBD · pith_short_16: 4H5Y5T73OUBDQDR6 · pith_short_8: 4H5Y5T73

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/4H5Y5T73OUBDQDR6657PKW7XGR \
  | 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: e1fb8ecffb7502380e3ef77ef55bf7347c90d43e844156be43e356bb5401af37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82b3c539fd76054d66a939e343e075ffb7ed9fc03d4e248095473b59779b889a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2011-11-17T01:04:15Z",
    "title_canon_sha256": "bcb437706666ea7167feb4ec30089dda74636c37a1f5046684528047c7f9e7b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.3996",
    "kind": "arxiv",
    "version": 3
  }
}