Pith Number

pith:N5S7NCAR

pith:2012:N5S7NCARKCCAOVOU6OX5AJC2ML

not attested not anchored not stored refs pending

The motivic Donaldson-Thomas invariants of (-2) curves

Ben Davison, Sven Meinhardt

arxiv:1208.2462 v3 · 2012-08-12 · 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{N5S7NCARKCCAOVOU6OX5AJC2ML}

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	2026-05-18T00:21:01.097139Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f65f6881150840755d4f3afd0245a62c5ebaa90998e0c3c2a8630bc14ff67d1

Aliases

arxiv: 1208.2462 · arxiv_version: 1208.2462v3 · doi: 10.48550/arxiv.1208.2462 · pith_short_12: N5S7NCARKCCA · pith_short_16: N5S7NCARKCCAOVOU · pith_short_8: N5S7NCAR

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/N5S7NCARKCCAOVOU6OX5AJC2ML \
  | 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: 6f65f6881150840755d4f3afd0245a62c5ebaa90998e0c3c2a8630bc14ff67d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5aaebaef223c529c17ab6d77d96f67e91b8399ca387047249b0066450b7b4bcb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-08-12T20:38:19Z",
    "title_canon_sha256": "1f46957678a62539fc5dbe358b9376c15180b16ce981b5f63eccfaf209f2c6b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.2462",
    "kind": "arxiv",
    "version": 3
  }
}