Pith Number

pith:BD4M6AWU

pith:2012:BD4M6AWUQQSHSATYD65DEADHE7

not attested not anchored not stored refs pending

Drawing outerplanar graphs

Noga Alon, Ohad Noy Feldheim

arxiv:1208.0744 v1 · 2012-08-03 · 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{BD4M6AWUQQSHSATYD65DEADHE7}

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	2026-05-18T01:09:38.367942Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08f8cf02d484247902781fba32006727c190cb77c406f703b023ff5ee3de13f2

Aliases

arxiv: 1208.0744 · arxiv_version: 1208.0744v1 · doi: 10.48550/arxiv.1208.0744 · pith_short_12: BD4M6AWUQQSH · pith_short_16: BD4M6AWUQQSHSATY · pith_short_8: BD4M6AWU

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/BD4M6AWUQQSHSATYD65DEADHE7 \
  | 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: 08f8cf02d484247902781fba32006727c190cb77c406f703b023ff5ee3de13f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "646603b7b31e80703c42b229d282c2d500be3f6e48faa1e7a9ae4924c8d4ac1b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-08-03T13:51:28Z",
    "title_canon_sha256": "b68d88277ea31e06b985067665c108ce4a8416ecdaa76b18647c1306abcf68e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.0744",
    "kind": "arxiv",
    "version": 1
  }
}