Pith Number

pith:HHWS7AC2

pith:2017:HHWS7AC27SXRUXP7B3Y2WQYRZA

not attested not anchored not stored refs pending

Triangle-free induced subgraphs of the unitary polarity graph

Francesco Pavese, Sam Mattheus

arxiv:1710.09131 v2 · 2017-10-25 · 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{HHWS7AC27SXRUXP7B3Y2WQYRZA}

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	2026-05-18T00:17:01.638091Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39ed2f805afcaf1a5dff0ef1ab4311c8370312e570cdb3b3f0fd15563c7dfed0

Aliases

arxiv: 1710.09131 · arxiv_version: 1710.09131v2 · doi: 10.48550/arxiv.1710.09131 · pith_short_12: HHWS7AC27SXR · pith_short_16: HHWS7AC27SXRUXP7 · pith_short_8: HHWS7AC2

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/HHWS7AC27SXRUXP7B3Y2WQYRZA \
  | 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: 39ed2f805afcaf1a5dff0ef1ab4311c8370312e570cdb3b3f0fd15563c7dfed0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ccc2b90eb51f8e1eac232d3af385cbf7e273bb909d1632e756e99349b0bd37e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-10-25T09:27:50Z",
    "title_canon_sha256": "7b44615082c75150aaa770ca012193810d1b2ca2c9cd11507b35cfaaa8cf5124"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.09131",
    "kind": "arxiv",
    "version": 2
  }
}