Pith Number

pith:X4ESDPJX

pith:2015:X4ESDPJXWLY65HUXFJQA55BQ5O

not attested not anchored not stored refs pending

Periods in missing lengths of rainbow cycles

Petr Vojt\v{e}chovsk\'y

arxiv:1509.05632 v1 · 2015-09-18 · 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{X4ESDPJXWLY65HUXFJQA55BQ5O}

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	2026-05-18T01:32:42.733259Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf0921bd37b2f1ee9e972a600ef430eb8370981881099840852cd0626d113d79

Aliases

arxiv: 1509.05632 · arxiv_version: 1509.05632v1 · doi: 10.48550/arxiv.1509.05632 · pith_short_12: X4ESDPJXWLY6 · pith_short_16: X4ESDPJXWLY65HUX · pith_short_8: X4ESDPJX

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/X4ESDPJXWLY65HUXFJQA55BQ5O \
  | 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: bf0921bd37b2f1ee9e972a600ef430eb8370981881099840852cd0626d113d79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9ebbbacbec91a609771a0ec8b0359d789b15e10366d4162580a5106d0ccbc3b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-09-18T13:47:25Z",
    "title_canon_sha256": "88e8777356c1ea07576f46fb703d519fd9df59f6a4aa94df9123e26d3004e976"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.05632",
    "kind": "arxiv",
    "version": 1
  }
}