Pith Number

pith:DNRZVNHZ

pith:2019:DNRZVNHZUS2RYX3AHSQ7UKGQ63

not attested not anchored not stored refs pending

Electromagnetic fields and charges in expanding universes

Gustavo E. Romero, Luciano Combi

arxiv:1903.01877 v1 · 2019-03-05 · 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{DNRZVNHZUS2RYX3AHSQ7UKGQ63}

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.

Cited by

1 paper in Pith

Dynamical black holes in the inflationary epoch

Receipt and verification

First computed	2026-05-17T23:50:07.934402Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b639ab4f9a4b51c5f603ca1fa28d0f6cc75da6de83fcd9d9cd6271dd4164959

Aliases

arxiv: 1903.01877 · arxiv_version: 1903.01877v1 · doi: 10.48550/arxiv.1903.01877 · pith_short_12: DNRZVNHZUS2R · pith_short_16: DNRZVNHZUS2RYX3A · pith_short_8: DNRZVNHZ

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/DNRZVNHZUS2RYX3AHSQ7UKGQ63 \
  | 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: 1b639ab4f9a4b51c5f603ca1fa28d0f6cc75da6de83fcd9d9cd6271dd4164959

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "304b26e4605addbd010b0496aebd87f253d58d67c2cdacf16d16879d43adcd86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-03-05T14:59:44Z",
    "title_canon_sha256": "6125550bc44c5890115c482a3109699749af4dd3bdd67bf8a383a638e3d18187"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.01877",
    "kind": "arxiv",
    "version": 1
  }
}