Pith Number

pith:2BE6E5FU

pith:2015:2BE6E5FUWYHZXH2K77XW36DZ23

not attested not anchored not stored refs pending

Knowledge Spaces and Learning Spaces

Jean-Claude Falmagne, Jean-Paul Doignon

arxiv:1511.06757 v1 · 2015-11-20 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2BE6E5FUWYHZXH2K77XW36DZ23}

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	2026-05-18T01:26:19.537675Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d049e274b4b60f9b9f4affef6df879d6f68f71b35f34aeea84f3bf455afa2026

Aliases

arxiv: 1511.06757 · arxiv_version: 1511.06757v1 · doi: 10.48550/arxiv.1511.06757 · pith_short_12: 2BE6E5FUWYHZ · pith_short_16: 2BE6E5FUWYHZXH2K · pith_short_8: 2BE6E5FU

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/2BE6E5FUWYHZXH2K77XW36DZ23 \
  | 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: d049e274b4b60f9b9f4affef6df879d6f68f71b35f34aeea84f3bf455afa2026

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af662dded8a327a71de6b323b150ec2b9c728570f0e61d2f88d21b9ff02d6488",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-11-20T15:16:20Z",
    "title_canon_sha256": "f8e93e0cf72a1f59de77d6aed8717ae98fc512789d1cd691f9206bb8787ce073"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.06757",
    "kind": "arxiv",
    "version": 1
  }
}