Pith Number

pith:3KS4IQKZ

pith:2018:3KS4IQKZG63ZDKHSNGP5W6EXTV

not attested not anchored not stored refs pending

Uniform semimodular lattices and valuated matroids

Hiroshi Hirai

arxiv:1802.08809 v2 · 2018-02-24 · 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{3KS4IQKZG63ZDKHSNGP5W6EXTV}

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	2026-05-17T23:52:24.539213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

daa5c4415937b791a8f2699fdb78979d676069f67ede2e40e3cc162064c3b07d

Aliases

arxiv: 1802.08809 · arxiv_version: 1802.08809v2 · doi: 10.48550/arxiv.1802.08809 · pith_short_12: 3KS4IQKZG63Z · pith_short_16: 3KS4IQKZG63ZDKHS · pith_short_8: 3KS4IQKZ

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/3KS4IQKZG63ZDKHSNGP5W6EXTV \
  | 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: daa5c4415937b791a8f2699fdb78979d676069f67ede2e40e3cc162064c3b07d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59b10376cb0df5abfc9fa76c4c7c93864c525751c89deaf016673512af08817e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-02-24T06:23:17Z",
    "title_canon_sha256": "251e9bb1190f0543022c275430f63af9ae1c52d12291f8d9778cc5687ca6ec9a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.08809",
    "kind": "arxiv",
    "version": 2
  }
}