Pith Number

pith:JUANHOEK

pith:2015:JUANHOEKALIIFMWUY2GWE67W55

not attested not anchored not stored refs pending

Differential invariants on symplectic spinors in contact projective geometry

Libor K\v{r}i\v{z}ka, Petr Somberg

arxiv:1512.08203 v3 · 2015-12-27 · math.RT · math-ph · math.DG · math.FA · math.MP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JUANHOEKALIIFMWUY2GWE67W55}

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	2026-05-18T00:48:20.345073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d00d3b88a02d082b2d4c68d627bf6ef4ed6735c5a35e7cd15b8996cfdce1dae

Aliases

arxiv: 1512.08203 · arxiv_version: 1512.08203v3 · doi: 10.48550/arxiv.1512.08203 · pith_short_12: JUANHOEKALII · pith_short_16: JUANHOEKALIIFMWU · pith_short_8: JUANHOEK

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/JUANHOEKALIIFMWUY2GWE67W55 \
  | 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: 4d00d3b88a02d082b2d4c68d627bf6ef4ed6735c5a35e7cd15b8996cfdce1dae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "150954c3f7b298279fd648d8f0f26125c9b7a5228beb3444152b5286009559bf",
    "cross_cats_sorted": [
      "math-ph",
      "math.DG",
      "math.FA",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RT",
    "submitted_at": "2015-12-27T11:20:42Z",
    "title_canon_sha256": "4d0229c9a4fbce2e88ccd8a86753f8a1ab6957590ff552de93d040ee15699df7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.08203",
    "kind": "arxiv",
    "version": 3
  }
}