Pith Number

pith:DESVG4PS

pith:2015:DESVG4PSN5S4J7AGNGQXNJTA7J

not attested not anchored not stored refs pending

Criticality and Big Brake singularities in the tachyonic evolutions of closed Friedmann universes with cold dark matter

Alexander Yu. Kamenshchik, L\'aszl\'o \'A. Gergely, Zolt\'an Keresztes, Zsolt Horv\'ath

arxiv:1505.00228 v1 · 2015-05-01 · 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{DESVG4PSN5S4J7AGNGQXNJTA7J}

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	2026-05-18T02:03:59.493828Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19255371f26f65c4fc0669a176a660fa58656f29afd2af6b4fee58f0b283fae7

Aliases

arxiv: 1505.00228 · arxiv_version: 1505.00228v1 · doi: 10.48550/arxiv.1505.00228 · pith_short_12: DESVG4PSN5S4 · pith_short_16: DESVG4PSN5S4J7AG · pith_short_8: DESVG4PS

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/DESVG4PSN5S4J7AGNGQXNJTA7J \
  | 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: 19255371f26f65c4fc0669a176a660fa58656f29afd2af6b4fee58f0b283fae7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f889e0c153515aca6a495151b9e3a4d3241b346262c16bcb5da7cfecd13689c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-05-01T17:32:44Z",
    "title_canon_sha256": "61e4f149fd6b16461b499cd463e630d03807abae71c9d5d339f390a30af8db44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.00228",
    "kind": "arxiv",
    "version": 1
  }
}