Pith Number

pith:ZFHEZ2Y7

pith:2007:ZFHEZ2Y7IXD2A6YVUVG25POMFZ

not attested not anchored not stored refs pending

Dark energy FRW cosmology - dynamical system reconstruction

Aleksandra Kurek, Marek Szydlowski

arxiv:0711.0359 v1 · 2007-11-02 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZFHEZ2Y7IXD2A6YVUVG25POMFZ}

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	2026-05-18T00:34:10.956339Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c94e4ceb1f45c7a07b15a54daebdcc2e4839adc2b8123ac7e6ab8bc17c27cd98

Aliases

arxiv: 0711.0359 · arxiv_version: 0711.0359v1 · doi: 10.48550/arxiv.0711.0359 · pith_short_12: ZFHEZ2Y7IXD2 · pith_short_16: ZFHEZ2Y7IXD2A6YV · pith_short_8: ZFHEZ2Y7

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/ZFHEZ2Y7IXD2A6YVUVG25POMFZ \
  | 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: c94e4ceb1f45c7a07b15a54daebdcc2e4839adc2b8123ac7e6ab8bc17c27cd98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3c25f02fefee271f022980230b0c18d63c3d393c542a085d15c6cdd7e3626be",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-11-02T17:20:10Z",
    "title_canon_sha256": "4c1125276d00d64de0a7d0191b76e3d682fb1239da7317d998121fdfdf86f514"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0711.0359",
    "kind": "arxiv",
    "version": 1
  }
}