Pith Number

pith:AOLMMYRO

pith:2007:AOLMMYRO3OSUHLE2DGQ4LV23GX

not attested not anchored not stored refs pending

The Sigma-D Relation for Planetary Nebulae: Preliminary Analysis

B. Arbutina, B. Vukotic, D. Ilic, D. Urosevic

arxiv:0704.0421 v3 · 2007-04-03 · 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{AOLMMYRO3OSUHLE2DGQ4LV23GX}

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	2026-07-04T17:16:21.768051Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0396c6622edba543ac9a19a1c5d75b35f73f43f01141608cdb9dad0446d043e7

Aliases

arxiv: 0704.0421 · arxiv_version: 0704.0421v3 · doi: 10.48550/arxiv.0704.0421 · pith_short_12: AOLMMYRO3OSU · pith_short_16: AOLMMYRO3OSUHLE2 · pith_short_8: AOLMMYRO

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/AOLMMYRO3OSUHLE2DGQ4LV23GX \
  | 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: 0396c6622edba543ac9a19a1c5d75b35f73f43f01141608cdb9dad0446d043e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "454d59c7a54fcb055ef8629e16612bb88a6251f73acb5faad14e43516b4801ca",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-04-03T15:36:39Z",
    "title_canon_sha256": "62fd55da7d157c092664ad313f956297624392f4088cb09d51c2a0805d247dba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.0421",
    "kind": "arxiv",
    "version": 3
  }
}