Pith Number

pith:KPU37JQF

pith:2015:KPU37JQFGP73V3VJB6RMMFZOVR

not attested not anchored not stored refs pending

Massless Dirac particles in the vacuum C-metric

Andrea Geralico, Donato Bini, Eduardo Bittencourt

arxiv:1509.04878 v1 · 2015-09-16 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KPU37JQFGP73V3VJB6RMMFZOVR}

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	2026-05-18T01:29:44.638401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53e9bfa60533ffbaeea90fa2c6172eac5cafd8f043ff4819f1dbc521356282e7

Aliases

arxiv: 1509.04878 · arxiv_version: 1509.04878v1 · doi: 10.48550/arxiv.1509.04878 · pith_short_12: KPU37JQFGP73 · pith_short_16: KPU37JQFGP73V3VJ · pith_short_8: KPU37JQF

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/KPU37JQFGP73V3VJB6RMMFZOVR \
  | 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: 53e9bfa60533ffbaeea90fa2c6172eac5cafd8f043ff4819f1dbc521356282e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80f6661053687df42f7f4e60a3aaa9700d2e0ad1b692244f6c8540604d9f1571",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-09-16T10:46:26Z",
    "title_canon_sha256": "68f931eaa06e0533eb6beeb811b7b5182f119841f83a126cb1d259566fc15659"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.04878",
    "kind": "arxiv",
    "version": 1
  }
}