Pith Number

pith:LXDYO7OF

pith:2025:LXDYO7OFMGOX5P5H5YUMCDANVQ

not attested not anchored not stored refs pending

The Jacobian of a regular orthogonal matroid and torsor structures on spanning quasi-trees of ribbon graphs

Changxin Ding, Donggyu Kim, Matthew Baker

arxiv:2501.08796 v3 · 2025-01-15 · 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{LXDYO7OFMGOX5P5H5YUMCDANVQ}

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	2026-06-19T16:12:44.843434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5dc7877dc5619d7ebfa7ee28c10c0dac20c5f62a276390a414b967442e68fd07

Aliases

arxiv: 2501.08796 · arxiv_version: 2501.08796v3 · doi: 10.48550/arxiv.2501.08796 · pith_short_12: LXDYO7OFMGOX · pith_short_16: LXDYO7OFMGOX5P5H · pith_short_8: LXDYO7OF

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/LXDYO7OFMGOX5P5H5YUMCDANVQ \
  | 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: 5dc7877dc5619d7ebfa7ee28c10c0dac20c5f62a276390a414b967442e68fd07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10ebd26ea3b63c8e1a12caa76f3876ab0505140390b27990507f72104e3cac49",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2025-01-15T13:44:24Z",
    "title_canon_sha256": "4e15a80f5e7e084a200e9c05c84299f03c1f2382d89e92546bad55a653da433c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.08796",
    "kind": "arxiv",
    "version": 3
  }
}