Pith Number

pith:POK6K7OS

pith:2009:POK6K7OSTEKL6RJF3CGDEBB52P

not attested not anchored not stored refs pending

A note on edge-colourings avoiding rainbow K_4 and monochromatic K_m

Daniel Kral, Tomas Kaiser, Veselin Jungic

arxiv:0902.1608 v1 · 2009-02-10 · 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{POK6K7OSTEKL6RJF3CGDEBB52P}

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	2026-05-18T04:40:45.414516Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b95e57dd29914bf4525d88c32043dd3f0dde08fb4a8a78fc6571e5a4221c0e0

Aliases

arxiv: 0902.1608 · arxiv_version: 0902.1608v1 · doi: 10.48550/arxiv.0902.1608 · pith_short_12: POK6K7OSTEKL · pith_short_16: POK6K7OSTEKL6RJF · pith_short_8: POK6K7OS

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/POK6K7OSTEKL6RJF3CGDEBB52P \
  | 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: 7b95e57dd29914bf4525d88c32043dd3f0dde08fb4a8a78fc6571e5a4221c0e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdcbe4c42112baeb0d513c97c604d766dc67e62e085014897f361f8c29732fe2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2009-02-10T09:11:53Z",
    "title_canon_sha256": "4361b07468b74ecc7a6ad96ed475aafeaff6c7bfb6095913bf70de7714518c35"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.1608",
    "kind": "arxiv",
    "version": 1
  }
}