Pith Number

pith:NZRYDDDI

pith:2015:NZRYDDDIEDJQL5VDRSKDCRKPLO

not attested not anchored not stored refs pending

Annular Non-Crossing Matchings

Paul Drube, Puttipong Pongtanapaisan

arxiv:1508.01712 v1 · 2015-08-07 · 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{NZRYDDDIEDJQL5VDRSKDCRKPLO}

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	2026-05-18T01:12:25.234688Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e63818c6820d305f6a38c9431454f5b9b331101062d8cd33a270d2582be0565

Aliases

arxiv: 1508.01712 · arxiv_version: 1508.01712v1 · doi: 10.48550/arxiv.1508.01712 · pith_short_12: NZRYDDDIEDJQ · pith_short_16: NZRYDDDIEDJQL5VD · pith_short_8: NZRYDDDI

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/NZRYDDDIEDJQL5VDRSKDCRKPLO \
  | 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: 6e63818c6820d305f6a38c9431454f5b9b331101062d8cd33a270d2582be0565

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8f83a636580c32efc44634152ec08f8ff8eaa54c12c3ce6ac0c521180c73a80",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-08-07T14:50:45Z",
    "title_canon_sha256": "cc85f986569cc30450f4e3effd43af90498764eb6b8f8ea0d14843c38b414672"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.01712",
    "kind": "arxiv",
    "version": 1
  }
}