Pith Number

pith:N56BI3AV

pith:2015:N56BI3AVG6FR7X5HGSBBXNFJUG

not attested not anchored not stored refs pending

Dynamic Black Holes in a FRW background: Lemaitre transformations

A. Dehghani, H. Moradpour, M. T. Mohammadi Sabet

arxiv:1504.07623 v1 · 2015-04-28 · 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{N56BI3AVG6FR7X5HGSBBXNFJUG}

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	2026-05-18T01:23:38.326211Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f7c146c15378b1fdfa734821bb4a9a1a4b61d72986c04a810d62b9b5232641e

Aliases

arxiv: 1504.07623 · arxiv_version: 1504.07623v1 · doi: 10.48550/arxiv.1504.07623 · pith_short_12: N56BI3AVG6FR · pith_short_16: N56BI3AVG6FR7X5H · pith_short_8: N56BI3AV

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/N56BI3AVG6FR7X5HGSBBXNFJUG \
  | 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: 6f7c146c15378b1fdfa734821bb4a9a1a4b61d72986c04a810d62b9b5232641e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b634d3599b62d0082d0aa21bd0e2a6797b0eacbbce687f95fca35fbe2d1149b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-04-28T15:17:42Z",
    "title_canon_sha256": "bc7a9cb7614b8b69488f1b729385eb07633ad2d5ce123f946603d2ff4d91f9a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.07623",
    "kind": "arxiv",
    "version": 1
  }
}