Pith Number

pith:OTQSE7RI

pith:2013:OTQSE7RIPTT2NXI6WBGHCKK7HG

not attested not anchored not stored refs pending

Almost CR quaternionic manifolds and their immersibility in HP^n

Andrea Santi

arxiv:1311.4072 v4 · 2013-11-16 · 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{OTQSE7RIPTT2NXI6WBGHCKK7HG}

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	2026-05-18T00:46:53.870815Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74e1227e287ce7a6dd1eb04c71295f39960cbe18a648c1381f916fc9d6f1b14a

Aliases

arxiv: 1311.4072 · arxiv_version: 1311.4072v4 · doi: 10.48550/arxiv.1311.4072 · pith_short_12: OTQSE7RIPTT2 · pith_short_16: OTQSE7RIPTT2NXI6 · pith_short_8: OTQSE7RI

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/OTQSE7RIPTT2NXI6WBGHCKK7HG \
  | 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: 74e1227e287ce7a6dd1eb04c71295f39960cbe18a648c1381f916fc9d6f1b14a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fa40aec5f1082088e352cd9b13c82401d9c4a1c4e7bbae0e0efbb8ba2c86d01",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-11-16T15:35:38Z",
    "title_canon_sha256": "fa6d666b510ce2300a95861b744e95533c27395200f3ec89c710e86b5a0a11a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.4072",
    "kind": "arxiv",
    "version": 4
  }
}