Pith Number

pith:M2NTURQF

pith:2011:M2NTURQFA35TIV37WEU3UBEYGS

not attested not anchored not stored refs pending

On the J-anti-invariant cohomology of almost complex 4-manifolds

Tedi Draghici, Tian-Jun Li, Weiyi Zhang

arxiv:1104.2511 v1 · 2011-04-13 · math.SG · 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{M2NTURQFA35TIV37WEU3UBEYGS}

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	2026-05-18T04:24:34.705397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

669b3a460506fb34577fb129ba049834acdae017210d5765d519e752fc7de430

Aliases

arxiv: 1104.2511 · arxiv_version: 1104.2511v1 · doi: 10.48550/arxiv.1104.2511 · pith_short_12: M2NTURQFA35T · pith_short_16: M2NTURQFA35TIV37 · pith_short_8: M2NTURQF

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/M2NTURQFA35TIV37WEU3UBEYGS \
  | 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: 669b3a460506fb34577fb129ba049834acdae017210d5765d519e752fc7de430

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e02bdbd472c4bd39d6cad6ff9a95565556f836d9ba5b8e064219979e7e70e63e",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2011-04-13T14:30:54Z",
    "title_canon_sha256": "61796a7472b6f13152e31bc58871e5a528b501a59a89f99ada955087afe35ba1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.2511",
    "kind": "arxiv",
    "version": 1
  }
}