Pith Number

pith:ATFOK3KK

pith:2017:ATFOK3KKAN4T2BNF6F5ON43MCQ

not attested not anchored not stored refs pending

Characteristic Cycles and the Relative Local Euler Obstruction

David B. Massey

arxiv:1704.04633 v2 · 2017-04-15 · 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{ATFOK3KKAN4T2BNF6F5ON43MCQ}

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	2026-05-18T00:45:10.679026Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

04cae56d4a03793d05a5f17ae6f36c143e46f57f50dff10edaf1405cf7bf6415

Aliases

arxiv: 1704.04633 · arxiv_version: 1704.04633v2 · doi: 10.48550/arxiv.1704.04633 · pith_short_12: ATFOK3KKAN4T · pith_short_16: ATFOK3KKAN4T2BNF · pith_short_8: ATFOK3KK

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/ATFOK3KKAN4T2BNF6F5ON43MCQ \
  | 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: 04cae56d4a03793d05a5f17ae6f36c143e46f57f50dff10edaf1405cf7bf6415

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4cabbcbdb198af9f888bc1238bf540f5540c6d5cdb57b2b304dfd6b4c104e12d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-04-15T12:32:58Z",
    "title_canon_sha256": "d1d72267c097e26cfbecb54de5b9e0d924401320c12271160f64feac518ed108"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.04633",
    "kind": "arxiv",
    "version": 2
  }
}