Pith Number

pith:MVTSGDDM

pith:2008:MVTSGDDMTTBH2UTJBV3YZE3TLT

not attested not anchored not stored refs pending

Quasi-K\"ahler groups, 3-manifold groups, and formality

Alexander I. Suciu, Alexandru Dimca, Stefan Papadima

arxiv:0810.2158 v3 · 2008-10-13 · math.AG · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MVTSGDDMTTBH2UTJBV3YZE3TLT}

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	2026-05-18T04:08:04.243173Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6567230c6c9cc27d52690d778c93735cdbfca52518d7a9faa5cfbdd8e9e19512

Aliases

arxiv: 0810.2158 · arxiv_version: 0810.2158v3 · doi: 10.48550/arxiv.0810.2158 · pith_short_12: MVTSGDDMTTBH · pith_short_16: MVTSGDDMTTBH2UTJ · pith_short_8: MVTSGDDM

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/MVTSGDDMTTBH2UTJBV3YZE3TLT \
  | 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: 6567230c6c9cc27d52690d778c93735cdbfca52518d7a9faa5cfbdd8e9e19512

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b62d8e034a2a34c96e6b9fc747a97a8aa4ab7da36c37859ddd2d96ec110d7190",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2008-10-13T05:38:46Z",
    "title_canon_sha256": "41d3adb9a84159649be01d716cad8904626178351d66abdc67c4cd2cf4b5f776"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.2158",
    "kind": "arxiv",
    "version": 3
  }
}