Pith Number

pith:6SEMWQ4G

pith:2014:6SEMWQ4GOYVOGTESL2RPBLKMIS

not attested not anchored not stored refs pending

Coloration of $K_7^-$-minor free graphs

Boris Albar

arxiv:1402.2806 v1 · 2014-02-12 · 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{6SEMWQ4GOYVOGTESL2RPBLKMIS}

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	2026-05-18T02:59:17.241954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f488cb4386762ae34c925ea2f0ad4c44ab0e45cee510491a635ee50d10ac2722

Aliases

arxiv: 1402.2806 · arxiv_version: 1402.2806v1 · doi: 10.48550/arxiv.1402.2806 · pith_short_12: 6SEMWQ4GOYVO · pith_short_16: 6SEMWQ4GOYVOGTES · pith_short_8: 6SEMWQ4G

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/6SEMWQ4GOYVOGTESL2RPBLKMIS \
  | 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: f488cb4386762ae34c925ea2f0ad4c44ab0e45cee510491a635ee50d10ac2722

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db5426fff316b802ef13e830896ec5eab8dc1bbc29770b256733beee54d02e86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-02-12T12:44:06Z",
    "title_canon_sha256": "f7dea75765a082641d2bf1e6000616a811ddcb1b2930e69781259ec542b4a4f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.2806",
    "kind": "arxiv",
    "version": 1
  }
}