Pith Number

pith:SBZUDL47

pith:2018:SBZUDL47YDKWONBGA3JVWPJ6A5

not attested not anchored not stored refs pending

Rainbow triangles and the Caccetta-H\"aggkvist conjecture

Matthew DeVos, Ron Aharoni, Ron Holzman

arxiv:1804.01317 v1 · 2018-04-04 · 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{SBZUDL47YDKWONBGA3JVWPJ6A5}

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	2026-05-18T00:19:15.434071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

907341af9fc0d567342606d35b3d3e0759adfb178db1394b8801534acd602cea

Aliases

arxiv: 1804.01317 · arxiv_version: 1804.01317v1 · doi: 10.48550/arxiv.1804.01317 · pith_short_12: SBZUDL47YDKW · pith_short_16: SBZUDL47YDKWONBG · pith_short_8: SBZUDL47

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/SBZUDL47YDKWONBGA3JVWPJ6A5 \
  | 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: 907341af9fc0d567342606d35b3d3e0759adfb178db1394b8801534acd602cea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0210abf86911738b5117b03c2c68295de41502ca7fbdde7c0cc909e191ef0979",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-04-04T09:33:58Z",
    "title_canon_sha256": "92786b9310db59cce6ba7dd312891a739b0eda91bd859641b1d2ce9983d67680"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.01317",
    "kind": "arxiv",
    "version": 1
  }
}