Pith Number

pith:SZ4J4OCO

pith:2003:SZ4J4OCOI4FI2CXREUDMARIOIG

not attested not anchored not stored refs pending

Deformations of G_2 and Spin(7) Structures on Manifolds

Spiro Karigiannis

arxiv:math/0301218 v4 · 2003-01-20 · 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{SZ4J4OCOI4FI2CXREUDMARIOIG}

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	2026-05-17T23:46:06.830857Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

96789e384e470a8d0af12506c0450e41a320c116d743acbdee3ccd1b6b3f89a3

Aliases

arxiv: math/0301218 · arxiv_version: math/0301218v4 · doi: 10.48550/arxiv.math/0301218 · pith_short_12: SZ4J4OCOI4FI · pith_short_16: SZ4J4OCOI4FI2CXR · pith_short_8: SZ4J4OCO

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/SZ4J4OCOI4FI2CXREUDMARIOIG \
  | 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: 96789e384e470a8d0af12506c0450e41a320c116d743acbdee3ccd1b6b3f89a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea753ced35b7ef1d3253b9eed21d43e008138ef8e44ff5d5a4a2c38308809827",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2003-01-20T18:51:29Z",
    "title_canon_sha256": "b490e81fbdd995ec9de4d0626acc5826ab8a628891b1ef60b05b097613173372"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0301218",
    "kind": "arxiv",
    "version": 4
  }
}