Pith Number

pith:DBB5CKYN

pith:2015:DBB5CKYNR2Q2Y4ZCY2QUN7DOIM

not attested not anchored not stored refs pending

The Dehn-Sommerville Relations and the Catalan Matroid

Anastasia Chavez, Nicole Yamzon

arxiv:1512.04513 v1 · 2015-12-14 · 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{DBB5CKYNR2Q2Y4ZCY2QUN7DOIM}

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	2026-05-18T01:24:22.088685Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1843d12b0d8ea1ac7322c6a146fc6e432a6b2592fcf854b58987eaa0ffc168f3

Aliases

arxiv: 1512.04513 · arxiv_version: 1512.04513v1 · doi: 10.48550/arxiv.1512.04513 · pith_short_12: DBB5CKYNR2Q2 · pith_short_16: DBB5CKYNR2Q2Y4ZC · pith_short_8: DBB5CKYN

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/DBB5CKYNR2Q2Y4ZCY2QUN7DOIM \
  | 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: 1843d12b0d8ea1ac7322c6a146fc6e432a6b2592fcf854b58987eaa0ffc168f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76ff8964c23ebf6c7791c90c92106bb1b18bcabacc3c0c070d765d26cab96bc7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-12-14T20:51:01Z",
    "title_canon_sha256": "6ac6d29943c06c7ae81d054068be25f28de72c9dd62ed23fe114a944f8279cf9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.04513",
    "kind": "arxiv",
    "version": 1
  }
}