Pith Number

pith:KTWPKQMD

pith:2015:KTWPKQMDOXSXABG2LR3GFVJHEY

not attested not anchored not stored refs pending

Tabulation of Noncrossing Acyclic Digraphs

Marco Kuhlmann

arxiv:1504.04993 v1 · 2015-04-20 · cs.DS · 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{KTWPKQMDOXSXABG2LR3GFVJHEY}

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	2026-05-18T02:18:23.020413Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

54ecf5418375e57004da5c7662d527263a4ba5d79ea78def9fa036d9a720a504

Aliases

arxiv: 1504.04993 · arxiv_version: 1504.04993v1 · doi: 10.48550/arxiv.1504.04993 · pith_short_12: KTWPKQMDOXSX · pith_short_16: KTWPKQMDOXSXABG2 · pith_short_8: KTWPKQMD

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/KTWPKQMDOXSXABG2LR3GFVJHEY \
  | 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: 54ecf5418375e57004da5c7662d527263a4ba5d79ea78def9fa036d9a720a504

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd1c401bdf551cd9972ce73bea63c05dc86ec4386b034648a15d470961e9f391",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-04-20T09:58:53Z",
    "title_canon_sha256": "f11eda79fb266c8055f566e86a7a04fbc4c48110bfbdfa09b376542c68601ce7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04993",
    "kind": "arxiv",
    "version": 1
  }
}