Pith Number

pith:EAXVIAB7

pith:2012:EAXVIAB7B5GWVRZOT2LDDDBYAS

not attested not anchored not stored refs pending

Harer stability and orbifold cohomology

Nicola Pagani

arxiv:1212.3547 v3 · 2012-12-14 · math.AG · math.AT

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

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	2026-05-18T02:51:57.214050Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

202f54003f0f4d6ac72e9e96318c38049064138d18bfb8a6985bac99d37a5357

Aliases

arxiv: 1212.3547 · arxiv_version: 1212.3547v3 · doi: 10.48550/arxiv.1212.3547 · pith_short_12: EAXVIAB7B5GW · pith_short_16: EAXVIAB7B5GWVRZO · pith_short_8: EAXVIAB7

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/EAXVIAB7B5GWVRZOT2LDDDBYAS \
  | 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: 202f54003f0f4d6ac72e9e96318c38049064138d18bfb8a6985bac99d37a5357

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3afb63df33f82c4a79072ca8ed9852be49e4523f191bf0586962afd53be79e97",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-12-14T17:59:58Z",
    "title_canon_sha256": "d86a96a57f780bd49876df4ede91cf2d433aaf0e92eee86276c1a4438b6b2899"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.3547",
    "kind": "arxiv",
    "version": 3
  }
}