Pith Number

pith:FSLKKL4F

pith:2012:FSLKKL4FSDB7OBWC5TYLPTTGIO

not attested not anchored not stored refs pending

h-vectors of matroid complexes

Alexandru Constantinescu, Matteo Varbaro

arxiv:1212.3226 v2 · 2012-12-13 · math.AC · 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{FSLKKL4FSDB7OBWC5TYLPTTGIO}

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	2026-05-18T03:38:32.493179Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c96a52f8590c3f706c2ecf0b7ce66439986144969cbe79ffb00bad81b709c38

Aliases

arxiv: 1212.3226 · arxiv_version: 1212.3226v2 · doi: 10.48550/arxiv.1212.3226 · pith_short_12: FSLKKL4FSDB7 · pith_short_16: FSLKKL4FSDB7OBWC · pith_short_8: FSLKKL4F

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/FSLKKL4FSDB7OBWC5TYLPTTGIO \
  | 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: 2c96a52f8590c3f706c2ecf0b7ce66439986144969cbe79ffb00bad81b709c38

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c0e38680a2f359dfb344babf4c937805e4f3bd317f7f6d41919a05e1fe619e4",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AC",
    "submitted_at": "2012-12-13T17:17:48Z",
    "title_canon_sha256": "1ef04b1e4e9e1d828ea8770ad5327bdcddff64a7360c4acfc7a36a73d5a96269"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.3226",
    "kind": "arxiv",
    "version": 2
  }
}