Pith Number

pith:XRPOGAUD

pith:2009:XRPOGAUDRIQP5II5HFUOVMMIB2

not attested not anchored not stored refs pending

Odd-dimensional Charney-Davis conjecture

Swiat R. Gal, Tadeusz Januszkiewicz

arxiv:0905.1961 v1 · 2009-05-12 · 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{XRPOGAUDRIQP5II5HFUOVMMIB2}

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	2026-05-18T04:39:39.279614Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc5ee302838a20fea11d3968eab1880ebf728f4dd448795e88b55363ccfe17b2

Aliases

arxiv: 0905.1961 · arxiv_version: 0905.1961v1 · doi: 10.48550/arxiv.0905.1961 · pith_short_12: XRPOGAUDRIQP · pith_short_16: XRPOGAUDRIQP5II5 · pith_short_8: XRPOGAUD

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/XRPOGAUDRIQP5II5HFUOVMMIB2 \
  | 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: bc5ee302838a20fea11d3968eab1880ebf728f4dd448795e88b55363ccfe17b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25fc385ff0bbc792cdc95aae62653a6d4871914a34d25da81f3e9bcc8a2fb866",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2009-05-12T21:36:12Z",
    "title_canon_sha256": "f26e9b79e51d7b6187e92272a5af42af9995acb6458af41e79ddbe6758cc1316"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.1961",
    "kind": "arxiv",
    "version": 1
  }
}