Pith Number

pith:GPIECEXA

pith:2014:GPIECEXAEX4CMBAH3BKL6EFLPG

not attested not anchored not stored refs pending

Bridge graphs and Deodhar parametrizations for positroid varieties

Rachel Karpman

arxiv:1411.2997 v1 · 2014-11-11 · 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{GPIECEXAEX4CMBAH3BKL6EFLPG}

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	2026-05-18T02:37:51.182661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

33d04112e025f8260407d854bf10ab79ba3839d03322213bd9513e78ec116c86

Aliases

arxiv: 1411.2997 · arxiv_version: 1411.2997v1 · doi: 10.48550/arxiv.1411.2997 · pith_short_12: GPIECEXAEX4C · pith_short_16: GPIECEXAEX4CMBAH · pith_short_8: GPIECEXA

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/GPIECEXAEX4CMBAH3BKL6EFLPG \
  | 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: 33d04112e025f8260407d854bf10ab79ba3839d03322213bd9513e78ec116c86

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0d21cdafbc0cafab0359dbfcaa798cc36487d575420bd27f190f7a481e6bcb4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-11-11T21:47:36Z",
    "title_canon_sha256": "b10dde114ef4043b3a13abecfe1c1b11a699902f751d89d73bd43658672b474d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.2997",
    "kind": "arxiv",
    "version": 1
  }
}