Pith Number

pith:S2JKCMUF

pith:2011:S2JKCMUFAEAPZRE5BJIR4BZNTM

not attested not anchored not stored refs pending

On invariants of almost symplectic connections

Roger Picken, Rui Albuquerque

arxiv:1107.1860 v1 · 2011-07-10 · math.SG · 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{S2JKCMUFAEAPZRE5BJIR4BZNTM}

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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	2026-05-17T23:39:42.594251Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9692a132850100fcc49d0a511e072d9b0bbae06cc82b2bbe89e5638e8bb8e2f4

Aliases

arxiv: 1107.1860 · arxiv_version: 1107.1860v1 · doi: 10.48550/arxiv.1107.1860 · pith_short_12: S2JKCMUFAEAP · pith_short_16: S2JKCMUFAEAPZRE5 · pith_short_8: S2JKCMUF

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/S2JKCMUFAEAPZRE5BJIR4BZNTM \
  | 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: 9692a132850100fcc49d0a511e072d9b0bbae06cc82b2bbe89e5638e8bb8e2f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d0a0c8abd7db59c4a716cf262e83e7a698a822fc89714d18b4b45fe924fa108",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2011-07-10T14:33:20Z",
    "title_canon_sha256": "c5b60b9663d0ba4c9a71af996d8abcbac7d2907dd7c096b9f9ab4643dbbd746b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.1860",
    "kind": "arxiv",
    "version": 1
  }
}