Pith Number

pith:VJCLJWGW

pith:2014:VJCLJWGWEMKSK4H2A5UDUJSAZK

not attested not anchored not stored refs pending

Coloring Digraphs with Forbidden Cycles

Jie Ma, Wenan Zang, Zhibin Chen

arxiv:1403.8127 v1 · 2014-03-31 · 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{VJCLJWGWEMKSK4H2A5UDUJSAZK}

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	2026-05-18T02:55:11.778934Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa44b4d8d623152570fa07683a2640ca87d00bad4078b770ba145f51be12df3b

Aliases

arxiv: 1403.8127 · arxiv_version: 1403.8127v1 · doi: 10.48550/arxiv.1403.8127 · pith_short_12: VJCLJWGWEMKS · pith_short_16: VJCLJWGWEMKSK4H2 · pith_short_8: VJCLJWGW

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/VJCLJWGWEMKSK4H2A5UDUJSAZK \
  | 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: aa44b4d8d623152570fa07683a2640ca87d00bad4078b770ba145f51be12df3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "629a2ce0c1e9b6381fef30675d552ea13a965990ca2de0b38442fd068f0562b8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-03-31T18:55:52Z",
    "title_canon_sha256": "e9997993285c16a6143e270cceeab5bc098e61f0ce16a9ccb7dc65a2aa4b14d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.8127",
    "kind": "arxiv",
    "version": 1
  }
}