Pith Number

pith:C2IF4HHE

pith:2012:C2IF4HHEDMP3FC6NWPH6O6OHKL

not attested not anchored not stored refs pending

Desingularization of Coassociative 4-folds with Conical Singularities: Obstructions and Applications

Jason D. Lotay

arxiv:1209.5116 v2 · 2012-09-23 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C2IF4HHEDMP3FC6NWPH6O6OHKL}

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	2026-05-18T02:26:39.560205Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16905e1ce41b1fb28bcdb3cfe779c752f4825ad8e52f535bd1deb989ee93a697

Aliases

arxiv: 1209.5116 · arxiv_version: 1209.5116v2 · doi: 10.48550/arxiv.1209.5116 · pith_short_12: C2IF4HHEDMP3 · pith_short_16: C2IF4HHEDMP3FC6N · pith_short_8: C2IF4HHE

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/C2IF4HHEDMP3FC6NWPH6O6OHKL \
  | 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: 16905e1ce41b1fb28bcdb3cfe779c752f4825ad8e52f535bd1deb989ee93a697

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99b02cb052c9573663a8d9b24999780a95d3b4230e3edf39886fba7ee123a344",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2012-09-23T21:44:59Z",
    "title_canon_sha256": "6d05348b76b4306ed1ba99b9d919189a552f604c012474462e51d6843c61b778"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5116",
    "kind": "arxiv",
    "version": 2
  }
}