Pith Number

pith:RFE53LES

pith:2013:RFE53LES6IG4WY4RAOUJAWHKLE

not attested not anchored not stored refs pending

Non-monochromatic non-rainbow colourings of $\sigma$-hypergraphs

Josef Lauri, Yair Caro

arxiv:1307.6642 v1 · 2013-07-25 · 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{RFE53LES6IG4WY4RAOUJAWHKLE}

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	2026-05-18T03:17:35.745723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8949ddac92f20dcb639103a89058ea590bb0c923c14aabdfda0142e7008c8b43

Aliases

arxiv: 1307.6642 · arxiv_version: 1307.6642v1 · doi: 10.48550/arxiv.1307.6642 · pith_short_12: RFE53LES6IG4 · pith_short_16: RFE53LES6IG4WY4R · pith_short_8: RFE53LES

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/RFE53LES6IG4WY4RAOUJAWHKLE \
  | 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: 8949ddac92f20dcb639103a89058ea590bb0c923c14aabdfda0142e7008c8b43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff41a81c6158429ad7807e9c16352abdf032a381f9136af38c7f8fcad76407ad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-07-25T07:03:40Z",
    "title_canon_sha256": "f2980a36481cb2366a70052d0101fb093893cb3f232d157ac91cdeea58f12eaf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.6642",
    "kind": "arxiv",
    "version": 1
  }
}