Pith Number

pith:UKPQHDLK

pith:2015:UKPQHDLKM2VP7RPFPK7TNYDHUU

not attested not anchored not stored refs pending

How to Hunt an Invisible Rabbit on a Graph

Fedor V. Fomin, Micha{\l} Pilipczuk, Petr A. Golovach, Tatjana V. Abramovskaya

arxiv:1502.05614 v2 · 2015-02-19 · math.CO · 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{UKPQHDLKM2VP7RPFPK7TNYDHUU}

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	2026-05-18T02:26:44.985956Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a29f038d6a66aaffc5e57abf36e067a5043f8a6b8df427e49a0b21a68b0153a8

Aliases

arxiv: 1502.05614 · arxiv_version: 1502.05614v2 · doi: 10.48550/arxiv.1502.05614 · pith_short_12: UKPQHDLKM2VP · pith_short_16: UKPQHDLKM2VP7RPF · pith_short_8: UKPQHDLK

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/UKPQHDLKM2VP7RPFPK7TNYDHUU \
  | 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: a29f038d6a66aaffc5e57abf36e067a5043f8a6b8df427e49a0b21a68b0153a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c5733e16243ad35217e4a257e93043d2026b0169f6c805b24b321b9225d1c53",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-02-19T16:24:39Z",
    "title_canon_sha256": "9dccbf39d47e88fdd9b96a64b42bfdfae8c6ee061c2a7aab9def52712ff2223b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.05614",
    "kind": "arxiv",
    "version": 2
  }
}