Pith Number

pith:T27PY5KO

pith:2018:T27PY5KOPYJNDWSD5XDCUNXCM5

not attested not anchored not stored refs pending

The slack realization space of a matroid

Amy Wiebe, Madeline Brandt

arxiv:1804.05264 v1 · 2018-04-14 · math.CO · math.AC · math.AG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T27PY5KOPYJNDWSD5XDCUNXCM5}

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	2026-05-18T00:18:28.467522Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ebefc754e7e12d1da43edc62a36e2675b975f46c708df2fad1a386276432eea

Aliases

arxiv: 1804.05264 · arxiv_version: 1804.05264v1 · doi: 10.48550/arxiv.1804.05264 · pith_short_12: T27PY5KOPYJN · pith_short_16: T27PY5KOPYJNDWSD · pith_short_8: T27PY5KO

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/T27PY5KOPYJNDWSD5XDCUNXCM5 \
  | 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: 9ebefc754e7e12d1da43edc62a36e2675b975f46c708df2fad1a386276432eea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eef8942d42d8365cf50420931462b295168d2c111dd5de23f5aa556558f64ac3",
    "cross_cats_sorted": [
      "math.AC",
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-04-14T18:47:38Z",
    "title_canon_sha256": "3b8a1a1149c0ac702cc5d3ef9a60955c8e52dd808fa65f7f61b0f26321ee00a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.05264",
    "kind": "arxiv",
    "version": 1
  }
}