Pith Number

pith:SJHSOYZV

pith:2013:SJHSOYZVOJX23Q2LCWU2RQTEMB

not attested not anchored not stored refs pending

Computer-verification of the structure of some classes of fragile matroids

Benjamin Clark, Carolyn Chun, Deborah Chun, Dillon Mayhew, Geoff Whittle, Stefan H.M. van Zwam

arxiv:1312.5175 v2 · 2013-12-05 · 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{SJHSOYZVOJX23Q2LCWU2RQTEMB}

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	2026-05-18T01:27:15.414429Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

924f276335726fadc34b15a9a8c2646058f9b48f8693b7b668b51c5975f3519b

Aliases

arxiv: 1312.5175 · arxiv_version: 1312.5175v2 · doi: 10.48550/arxiv.1312.5175 · pith_short_12: SJHSOYZVOJX2 · pith_short_16: SJHSOYZVOJX23Q2L · pith_short_8: SJHSOYZV

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/SJHSOYZVOJX23Q2LCWU2RQTEMB \
  | 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: 924f276335726fadc34b15a9a8c2646058f9b48f8693b7b668b51c5975f3519b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "101a87b47bbc626d3d31df31b27ec7cbbbab67896bdfa338b4e6544b1d718695",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-12-05T20:26:27Z",
    "title_canon_sha256": "6c721d08a11846ef1e9d5812f346cac9c1f1bbc4a38318c67b802dc1d21b2224"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.5175",
    "kind": "arxiv",
    "version": 2
  }
}