Pith Number

pith:TSMEC3DF

pith:2011:TSMEC3DFG53EUR4RTMPOCYJD5P

not attested not anchored not stored refs pending

Existence of Compatible Contact Structures on $G_2$-manifolds

Hyunjoo Cho, M. Firat Arikan, Sema Salur

arxiv:1112.2951 v1 · 2011-12-13 · math.DG · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TSMEC3DFG53EUR4RTMPOCYJD5P}

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	2026-05-18T00:20:27.974823Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c98416c6537764a47919b1ee16123ebc32a9b421e382f12cb94bba656f1f65b

Aliases

arxiv: 1112.2951 · arxiv_version: 1112.2951v1 · doi: 10.48550/arxiv.1112.2951 · pith_short_12: TSMEC3DFG53E · pith_short_16: TSMEC3DFG53EUR4R · pith_short_8: TSMEC3DF

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/TSMEC3DFG53EUR4RTMPOCYJD5P \
  | 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: 9c98416c6537764a47919b1ee16123ebc32a9b421e382f12cb94bba656f1f65b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d56037ff648a1c9419f748e645ae4cee9685c230fde0baaf23f4de960487647e",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2011-12-13T16:45:40Z",
    "title_canon_sha256": "c3c8fc0a7d2682c836f33673eacdceb03ef9292b9f1882cf47e1a96c3300a907"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.2951",
    "kind": "arxiv",
    "version": 1
  }
}