Pith Number

pith:LRB6P4WP

pith:2009:LRB6P4WPVEHSZLSZ4CCQ7LEHCJ

not attested not anchored not stored refs pending

The Sigma - D relation for planetary nebulae

B. Arbutina, B. Vukoti\'c, D. Ili\'c, D. Uro\v{s}evi\'c, I. Boji\v{c}i\'c, M. Filipovi\'c, S. Vidojevi\'c, S. \v{S}egan

arxiv:0901.2334 v1 · 2009-01-15 · 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{LRB6P4WPVEHSZLSZ4CCQ7LEHCJ}

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	2026-07-04T17:18:17.560571Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c43e7f2cfa90f2cae59e0850fac871265b8555f7a9b727ca63e0fef4ddcf70a

Aliases

arxiv: 0901.2334 · arxiv_version: 0901.2334v1 · doi: 10.48550/arxiv.0901.2334 · pith_short_12: LRB6P4WPVEHS · pith_short_16: LRB6P4WPVEHSZLSZ · pith_short_8: LRB6P4WP

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/LRB6P4WPVEHSZLSZ4CCQ7LEHCJ \
  | 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: 5c43e7f2cfa90f2cae59e0850fac871265b8555f7a9b727ca63e0fef4ddcf70a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b235cc2ed730d142ea0a5bb7a78244b5aed048608a3c1f34f692913e8390d40d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-01-15T19:34:14Z",
    "title_canon_sha256": "1556d0ec8d222734665b50cbdd543e846ddbc38357ea1d501cf7d2b58f5e817c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.2334",
    "kind": "arxiv",
    "version": 1
  }
}