Pith Number

pith:QCHYIYES

pith:2014:QCHYIYESUNFNEDPL3JTAXQST73

not attested not anchored not stored refs pending

On the representability of the bi-uniform matroid

Carles Padr\'o, Chaoping Xing, Simeon Ball, Zsuzsa Weiner

arxiv:1407.7283 v1 · 2014-07-27 · 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{QCHYIYESUNFNEDPL3JTAXQST73}

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	2026-05-18T02:46:23.426868Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

808f846092a34ad20debda660bc253fee4898a03333cb34188f7c3da9c361b70

Aliases

arxiv: 1407.7283 · arxiv_version: 1407.7283v1 · doi: 10.48550/arxiv.1407.7283 · pith_short_12: QCHYIYESUNFN · pith_short_16: QCHYIYESUNFNEDPL · pith_short_8: QCHYIYES

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/QCHYIYESUNFNEDPL3JTAXQST73 \
  | 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: 808f846092a34ad20debda660bc253fee4898a03333cb34188f7c3da9c361b70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10e81678f81a49e27831a2038aa3ec8eeaebbc7da7686f95e151020144ec51a3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-07-27T20:55:15Z",
    "title_canon_sha256": "4b0d1a37f811bcb46e38c93bc49b262e290672cacfb0dab5148787648c391f88"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.7283",
    "kind": "arxiv",
    "version": 1
  }
}