Pith Number

pith:M4ZOWMP4

pith:2015:M4ZOWMP4Y5EVSCMWTFDAWQQMPU

not attested not anchored not stored refs pending

A Universal Spinor Bundle and the Einstein-Dirac-Maxwell Equation as a Variational Theory

Nikolai Nowaczyk, Olaf M\"uller

arxiv:1504.01034 v3 · 2015-04-04 · 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{M4ZOWMP4Y5EVSCMWTFDAWQQMPU}

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	2026-05-18T00:54:41.684782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6732eb31fcc74959099699460b420c7d30fa3e147eb8bcfe9e03f03512eeea42

Aliases

arxiv: 1504.01034 · arxiv_version: 1504.01034v3 · doi: 10.48550/arxiv.1504.01034 · pith_short_12: M4ZOWMP4Y5EV · pith_short_16: M4ZOWMP4Y5EVSCMW · pith_short_8: M4ZOWMP4

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/M4ZOWMP4Y5EVSCMWTFDAWQQMPU \
  | 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: 6732eb31fcc74959099699460b420c7d30fa3e147eb8bcfe9e03f03512eeea42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb8cf653329d7ab4d8eda445b319ec427e3b9de9091c1d6b853230e11db93ede",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2015-04-04T18:14:21Z",
    "title_canon_sha256": "00d0622472976499233227ea09387ee4a8ca732f9c8631fdbdc27df983c9b523"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.01034",
    "kind": "arxiv",
    "version": 3
  }
}