Pith Number

pith:SPSBNXLG

pith:2026:SPSBNXLGML7AC2SCQ47DJA5JMG

not attested not anchored not stored refs pending

Characterisations of strong $\Delta$-matroids

Alex Fink, Aram Dermenjian, Ben Smith, Kieran Calvert

arxiv:2607.02419 v1 · 2026-07-02 · 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{SPSBNXLGML7AC2SCQ47DJA5JMG}

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	2026-07-03T01:17:58.736810Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93e416dd6662fe016a42873e3483a9618bcb4d69a762eeca0819d296f8a60a67

Aliases

arxiv: 2607.02419 · arxiv_version: 2607.02419v1 · doi: 10.48550/arxiv.2607.02419 · pith_short_12: SPSBNXLGML7A · pith_short_16: SPSBNXLGML7AC2SC · pith_short_8: SPSBNXLG

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/SPSBNXLGML7AC2SCQ47DJA5JMG \
  | 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: 93e416dd6662fe016a42873e3483a9618bcb4d69a762eeca0819d296f8a60a67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40950e867afb8c6185ed26c201b98d32fbece7837bc40202b0c092257c517006",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2026-07-02T16:49:03Z",
    "title_canon_sha256": "403522564e37f27c686d4e5364757f9e3e8432525680edf586cbf18d36846fbf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.02419",
    "kind": "arxiv",
    "version": 1
  }
}