Pith Number

pith:7XOLGNPK

pith:2017:7XOLGNPK2I7GQ4D5OUPL3CNIEK

not attested not anchored not stored refs pending

Real intersection homology

Adam Parusinski, Clint McCrory

arxiv:1701.08805 v2 · 2017-01-30 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7XOLGNPK2I7GQ4D5OUPL3CNIEK}

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	2026-05-18T00:27:21.792963Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fddcb335ead23e68707d751ebd89a822821b5de76b56f79da4449e36f73adfb9

Aliases

arxiv: 1701.08805 · arxiv_version: 1701.08805v2 · doi: 10.48550/arxiv.1701.08805 · pith_short_12: 7XOLGNPK2I7G · pith_short_16: 7XOLGNPK2I7GQ4D5 · pith_short_8: 7XOLGNPK

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/7XOLGNPK2I7GQ4D5OUPL3CNIEK \
  | 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: fddcb335ead23e68707d751ebd89a822821b5de76b56f79da4449e36f73adfb9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f26d0f22394784e1ee9ef9535cb295b6794fc5783f96d809ad03ff55c24dae6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-01-30T19:59:49Z",
    "title_canon_sha256": "163bc92419ee5729b6ca60ecb420d09366a1cf5f74dc6ebb684264a41668d2f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.08805",
    "kind": "arxiv",
    "version": 2
  }
}