Pith Number

pith:2M4JDN4X

pith:2019:2M4JDN4XIHG6AC6V7GOX2LKVUA

not attested not anchored not stored refs pending

Automorphism group of principal bundles, Levi reduction and invariant connections

Francois-Xavier Machu, Indranil Biswas

arxiv:1906.05364 v1 · 2019-06-12 · math.AG · 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{2M4JDN4XIHG6AC6V7GOX2LKVUA}

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	2026-05-17T23:43:25.479125Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d33891b79741cde00bd5f99d7d2d55a00c6eb2e34acc94629615a213fc8ea27e

Aliases

arxiv: 1906.05364 · arxiv_version: 1906.05364v1 · doi: 10.48550/arxiv.1906.05364 · pith_short_12: 2M4JDN4XIHG6 · pith_short_16: 2M4JDN4XIHG6AC6V · pith_short_8: 2M4JDN4X

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/2M4JDN4XIHG6AC6V7GOX2LKVUA \
  | 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: d33891b79741cde00bd5f99d7d2d55a00c6eb2e34acc94629615a213fc8ea27e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c6230ac49a52d89b35e16f6abe1e2ce074df00165b2cfab3f39ed8ced30cad9",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-06-12T20:04:34Z",
    "title_canon_sha256": "a8afd2437b71d6adf5d7e609647307a0281f495a45828eedbe03f317222c0675"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.05364",
    "kind": "arxiv",
    "version": 1
  }
}