Pith Number

pith:ROY5DW4H

pith:2009:ROY5DW4HRMSAXXIQT2B4ORPHWR

not attested not anchored not stored refs pending

Testing homogeneity with galaxy number counts : light-cone metric and general low-redshift expansion for a central observer in a matter dominated isotropic universe without cosmological constant

Antonio Enea Romano

arxiv:0911.2927 v3 · 2009-11-16 · astro-ph.CO · astro-ph.GA · astro-ph.HE · 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{ROY5DW4HRMSAXXIQT2B4ORPHWR}

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	2026-05-18T02:34:05.282266Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8bb1d1db878b240bdd109e83c745e7b46dfc2967125986f0735fe798f0475ba5

Aliases

arxiv: 0911.2927 · arxiv_version: 0911.2927v3 · doi: 10.48550/arxiv.0911.2927 · pith_short_12: ROY5DW4HRMSA · pith_short_16: ROY5DW4HRMSAXXIQ · pith_short_8: ROY5DW4H

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/ROY5DW4HRMSAXXIQT2B4ORPHWR \
  | 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: 8bb1d1db878b240bdd109e83c745e7b46dfc2967125986f0735fe798f0475ba5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "000b65c0da685c6b07afd4752576c53daa5df925d7e0d9393d74f4f7d997ae63",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-16T16:23:06Z",
    "title_canon_sha256": "a000741261012a7bab9571a23a978771c105f0660de75f1dbe3029a5364430cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.2927",
    "kind": "arxiv",
    "version": 3
  }
}