Pith Number

pith:VHIZXWD5

pith:2014:VHIZXWD5MC4G6LMDL2O3FZMNSY

not attested not anchored not stored refs pending

Computing the Tutte Polynomial of a Matroid from its Lattice of Cyclic Flats

Jens Niklas Eberhardt

arxiv:1407.6666 v2 · 2014-07-24 · 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{VHIZXWD5MC4G6LMDL2O3FZMNSY}

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	2026-05-18T02:41:59.284192Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9d19bd87d60b86f2d835e9db2e58d960a9880076a31627c4d9062376f3e3cfa

Aliases

arxiv: 1407.6666 · arxiv_version: 1407.6666v2 · doi: 10.48550/arxiv.1407.6666 · pith_short_12: VHIZXWD5MC4G · pith_short_16: VHIZXWD5MC4G6LMD · pith_short_8: VHIZXWD5

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/VHIZXWD5MC4G6LMDL2O3FZMNSY \
  | 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: a9d19bd87d60b86f2d835e9db2e58d960a9880076a31627c4d9062376f3e3cfa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e22cdb11a036903aac70aaa4a174754a0abc757c3d36310e472c53ed3c3bebd2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-07-24T17:44:17Z",
    "title_canon_sha256": "2a4fd94d088e7b1ee7858639e57dbb12cf472a4d3358b73954c46fbcbc9a3736"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.6666",
    "kind": "arxiv",
    "version": 2
  }
}