Pith Number

pith:OFUWIDQM

pith:2013:OFUWIDQMEWIREK2BUYGCRDYWYZ

not attested not anchored not stored refs pending

Positroids and non-crossing partitions

Federico Ardila, Felipe Rinc\'on, Lauren Williams

arxiv:1308.2698 v2 · 2013-08-12 · 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{OFUWIDQMEWIREK2BUYGCRDYWYZ}

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	2026-05-18T03:13:21.197145Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7169640e0c2591122b41a60c288f16c664e163c393f93101897bdb453ed37cb3

Aliases

arxiv: 1308.2698 · arxiv_version: 1308.2698v2 · doi: 10.48550/arxiv.1308.2698 · pith_short_12: OFUWIDQMEWIR · pith_short_16: OFUWIDQMEWIREK2B · pith_short_8: OFUWIDQM

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/OFUWIDQMEWIREK2BUYGCRDYWYZ \
  | 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: 7169640e0c2591122b41a60c288f16c664e163c393f93101897bdb453ed37cb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4718392fbd465dbcb33832c674246d491a29e96888c21169dd1dba33ad5400ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-08-12T20:59:13Z",
    "title_canon_sha256": "5b5ba072e5e452c30ab77b5b12a2a9f4635dc635b5ed30901bb85b0111b7ccd5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.2698",
    "kind": "arxiv",
    "version": 2
  }
}