Pith Number

pith:QIV73GGM

pith:2012:QIV73GGMNDWW6ALYCAD62VWTS6

not attested not anchored not stored refs pending

Rainbow Colouring of Split and Threshold Graphs

Deepak Rajendraprasad, L. Sunil Chandran

arxiv:1205.1670 v1 · 2012-05-08 · cs.DM · cs.CC · cs.DS · 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{QIV73GGMNDWW6ALYCAD62VWTS6}

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	2026-05-18T03:56:09.491629Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

822bfd98cc68ed6f01781007ed56d3978ff0ad1db65ce79f8e897fb6a9f7a632

Aliases

arxiv: 1205.1670 · arxiv_version: 1205.1670v1 · doi: 10.48550/arxiv.1205.1670 · pith_short_12: QIV73GGMNDWW · pith_short_16: QIV73GGMNDWW6ALY · pith_short_8: QIV73GGM

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/QIV73GGMNDWW6ALYCAD62VWTS6 \
  | 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: 822bfd98cc68ed6f01781007ed56d3978ff0ad1db65ce79f8e897fb6a9f7a632

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e764bf9ef8baaf152f0772c377c4500fab31ccbbf8896c1493d1caca9fff4cca",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DS",
      "math.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2012-05-08T12:25:19Z",
    "title_canon_sha256": "d1a02375d8911732689904e09c1fb9f6511e23cc25d878d8a7c21afa14b77bfa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.1670",
    "kind": "arxiv",
    "version": 1
  }
}