Pith Number

pith:P5GLFE7O

pith:2010:P5GLFE7O2GSE6O57GNJSOAEZOE

not attested not anchored not stored refs pending

Matroid automorphisms of the H_4 root system

Camila Freidman-Gerlicz, Chencong Bao, Gary Gordon, Jessica Vega, Peter McGrath

arxiv:1005.5492 v2 · 2010-05-30 · 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{P5GLFE7O2GSE6O57GNJSOAEZOE}

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	2026-05-18T04:38:16.973818Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f4cb293eed1a44f3bbf3353270099713a0f64c3fb649427c964ed0f75de3af8

Aliases

arxiv: 1005.5492 · arxiv_version: 1005.5492v2 · doi: 10.48550/arxiv.1005.5492 · pith_short_12: P5GLFE7O2GSE · pith_short_16: P5GLFE7O2GSE6O57 · pith_short_8: P5GLFE7O

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/P5GLFE7O2GSE6O57GNJSOAEZOE \
  | 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: 7f4cb293eed1a44f3bbf3353270099713a0f64c3fb649427c964ed0f75de3af8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5cb90cdf386c25a8ad948b0b4bda27fa2aa858959e1bbde99b8a6f91edb6513b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-05-30T00:40:58Z",
    "title_canon_sha256": "44781b1558b2df7df23fb5734d64483a970bdf882df437971d99cf2c269d640d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.5492",
    "kind": "arxiv",
    "version": 2
  }
}