Pith Number

pith:NQYQOZVD

pith:2012:NQYQOZVDV2L2C5THM57PY7O7OK

not attested not anchored not stored refs pending

Little Rip cosmological models with time-dependent equation of state

A. V. Timoshkin, I. Brevik, K. E. Osetrin, V. V. Obukhov

arxiv:1210.4412 v2 · 2012-10-16 · 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{NQYQOZVDV2L2C5THM57PY7O7OK}

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	2026-05-18T03:41:21.136212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c310766a3ae97a17667677efc7ddf72baaedb7c6c122536baa07efbba30a51e

Aliases

arxiv: 1210.4412 · arxiv_version: 1210.4412v2 · doi: 10.48550/arxiv.1210.4412 · pith_short_12: NQYQOZVDV2L2 · pith_short_16: NQYQOZVDV2L2C5TH · pith_short_8: NQYQOZVD

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/NQYQOZVDV2L2C5THM57PY7O7OK \
  | 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: 6c310766a3ae97a17667677efc7ddf72baaedb7c6c122536baa07efbba30a51e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd0b47acd4689948715d0f4a599ca46a3136d37e04c4aa384206f5539c83b12b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-10-16T13:55:47Z",
    "title_canon_sha256": "1c460b26ac5554025d02da5bfccb4fc1ec0248137861fb6cfa1f5d9aec0fec5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.4412",
    "kind": "arxiv",
    "version": 2
  }
}