Pith Number

pith:OHY44YJA

pith:2023:OHY44YJAX3LDXNXRHY2FNMLMEC

not attested not anchored not stored refs pending

Cohomologies of tautological bundles of matroids

Christopher Eur

arxiv:2307.04813 v3 · 2023-07-10 · math.AG · 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{OHY44YJAX3LDXNXRHY2FNMLMEC}

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	2026-07-05T08:29:44.307438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71f1ce6120bed63bb6f13e3456b16c2090019d86cd9cc140887e5a8cdaa622b7

Aliases

arxiv: 2307.04813 · arxiv_version: 2307.04813v3 · doi: 10.48550/arxiv.2307.04813 · pith_short_12: OHY44YJAX3LD · pith_short_16: OHY44YJAX3LDXNXR · pith_short_8: OHY44YJA

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/OHY44YJAX3LDXNXRHY2FNMLMEC \
  | 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: 71f1ce6120bed63bb6f13e3456b16c2090019d86cd9cc140887e5a8cdaa622b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13bd979573b709839e1c79c58a47540a1844e47c76aaa2f2cf3794fce7a0533a",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2023-07-10T18:02:56Z",
    "title_canon_sha256": "281b324cc68f144baf4b4174eea11acc691e95813be4e73f4dc97b8047bb0b60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2307.04813",
    "kind": "arxiv",
    "version": 3
  }
}