Pith Number

pith:YDPIMTV3

pith:2013:YDPIMTV3O5HWKLVU7YXB22ODZE

not attested not anchored not stored refs pending

The smooth center of the cohomology of a singular variety

Donu Arapura, Su-Jeong Kang, Xi Chen

arxiv:1301.3057 v2 · 2013-01-14 · 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{YDPIMTV3O5HWKLVU7YXB22ODZE}

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	2026-05-18T03:29:26.753727Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0de864ebb774f652eb4fe2e1d69c3c917b78c68cf863f48058dc0418f7f51d1

Aliases

arxiv: 1301.3057 · arxiv_version: 1301.3057v2 · doi: 10.48550/arxiv.1301.3057 · pith_short_12: YDPIMTV3O5HW · pith_short_16: YDPIMTV3O5HWKLVU · pith_short_8: YDPIMTV3

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/YDPIMTV3O5HWKLVU7YXB22ODZE \
  | 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: c0de864ebb774f652eb4fe2e1d69c3c917b78c68cf863f48058dc0418f7f51d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f90e3654f8d0f3fea7c584ff6ff57fbc5f1faf6790d26c247352cd61b05112a8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-01-14T17:03:14Z",
    "title_canon_sha256": "6fe2abdb76cb023802b7cb50f604d1138748873de93b878e104c73773e7b0d56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.3057",
    "kind": "arxiv",
    "version": 2
  }
}