Pith Number

pith:EXV6PVPU

pith:2009:EXV6PVPUGBP52TYVXGQJOVPZHC

not attested not anchored not stored refs pending

Uncertainties on the theoretical predictions for classical Cepheid pulsational quantities

G. Valle, M. Marconi, P.G. Prada Moroni, S. Degl'Innocenti

arxiv:0911.2840 v1 · 2009-11-15 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EXV6PVPUGBP52TYVXGQJOVPZHC}

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	2026-05-18T02:10:47.579946Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25ebe7d5f4305fdd4f15b9a09755f93887bd31c018c0984f08fd2592ed50f60f

Aliases

arxiv: 0911.2840 · arxiv_version: 0911.2840v1 · doi: 10.48550/arxiv.0911.2840 · pith_short_12: EXV6PVPUGBP5 · pith_short_16: EXV6PVPUGBP52TYV · pith_short_8: EXV6PVPU

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/EXV6PVPUGBP52TYVXGQJOVPZHC \
  | 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: 25ebe7d5f4305fdd4f15b9a09755f93887bd31c018c0984f08fd2592ed50f60f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "035cd944fdf3766c94212d36a7b2179e17a55235bd0a483d4a1657744de1e63f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-11-15T08:40:16Z",
    "title_canon_sha256": "e65c29054258f000a35c333fe6d7388fd5608bf86182d91c5a8b0d3dbb24b08a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.2840",
    "kind": "arxiv",
    "version": 1
  }
}