Pith Number

pith:I757PKH4

pith:2013:I757PKH4WME2YW4YRL5BDS43IM

not attested not anchored not stored refs pending

Quaternionic contact Einstein manifolds

D. Vassilev, I. Minchev, S. Ivanov

arxiv:1306.0474 v1 · 2013-06-03 · 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{I757PKH4WME2YW4YRL5BDS43IM}

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	2026-05-18T03:21:55.216902Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47fbf7a8fcb309ac5b988afa11cb9b430520bc722d427b9d5dc444eac65c127a

Aliases

arxiv: 1306.0474 · arxiv_version: 1306.0474v1 · doi: 10.48550/arxiv.1306.0474 · pith_short_12: I757PKH4WME2 · pith_short_16: I757PKH4WME2YW4Y · pith_short_8: I757PKH4

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/I757PKH4WME2YW4YRL5BDS43IM \
  | 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: 47fbf7a8fcb309ac5b988afa11cb9b430520bc722d427b9d5dc444eac65c127a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c956df11098e75b638cd077a0a0c028c284ff95cf2a66fdf2f0b4bdf5069caf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-06-03T15:59:14Z",
    "title_canon_sha256": "cd2a9583c9d28345e23221c7dbae0af6b99348a2f2e266fddfbe83e39e33c9ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.0474",
    "kind": "arxiv",
    "version": 1
  }
}