Pith Number

pith:5OS7NFCR

pith:2012:5OS7NFCR4CT6RNSSCR6AXWOS7H

not attested not anchored not stored refs pending

Contact Structures on G_2-Manifolds and Spin 7-Manifolds

Hyunjoo Cho, M. Firat Arikan, Sema Salur

arxiv:1207.2046 v1 · 2012-07-09 · math.DG · math.GT · 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{5OS7NFCR4CT6RNSSCR6AXWOS7H}

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	2026-05-18T03:51:26.205752Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eba5f69451e0a7e8b652147c0bd9d2f9ede84a38e488f6029f5350061dfbe53c

Aliases

arxiv: 1207.2046 · arxiv_version: 1207.2046v1 · doi: 10.48550/arxiv.1207.2046 · pith_short_12: 5OS7NFCR4CT6 · pith_short_16: 5OS7NFCR4CT6RNSS · pith_short_8: 5OS7NFCR

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/5OS7NFCR4CT6RNSSCR6AXWOS7H \
  | 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: eba5f69451e0a7e8b652147c0bd9d2f9ede84a38e488f6029f5350061dfbe53c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e117a9cd447dd25295a1a6897de65cff4d0d3fca1bfe2554a0b5e2cdccb039f",
    "cross_cats_sorted": [
      "math.GT",
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2012-07-09T13:58:15Z",
    "title_canon_sha256": "e971be6efbe6c4a2d44618af5980fbdaf4cf118c3eb315a7b6827061f04be94b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.2046",
    "kind": "arxiv",
    "version": 1
  }
}