Pith Number

pith:27KF2K4G

pith:2011:27KF2K4G3CJ3D3B4BV2LUCPUA4

not attested not anchored not stored refs pending

Investigation of the recombination of the retarded shell of "born-again" CSPNe by time-dependent radiative transfer models

Alexander Ostermann (Mathematics, Anita Reimer (Theoretical Physics, Antti Koskela (Mathematics, Innsbruck), Particle Physics, Ralf Kissmann (Astro-, Silvia Dalnodar (Astro-, Stefan Kimeswenger (Astro-

arxiv:1109.1930 v1 · 2011-09-09 · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{27KF2K4G3CJ3D3B4BV2LUCPUA4}

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	2026-05-18T02:00:37.421794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7d45d2b86d893b1ec3c0d74ba09f4070281a0191b14a47932ac1dc4454519a4

Aliases

arxiv: 1109.1930 · arxiv_version: 1109.1930v1 · doi: 10.48550/arxiv.1109.1930 · pith_short_12: 27KF2K4G3CJ3 · pith_short_16: 27KF2K4G3CJ3D3B4 · pith_short_8: 27KF2K4G

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/27KF2K4G3CJ3D3B4BV2LUCPUA4 \
  | 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: d7d45d2b86d893b1ec3c0d74ba09f4070281a0191b14a47932ac1dc4454519a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "daffa876b59d0b7a8f11fc193dfe19c8058a38f26b237d529ce18d253f409269",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-09-09T08:04:06Z",
    "title_canon_sha256": "426416f24b7fea0c9ddc08ca87e9e477f56752b6689bce96aae4d3bd955a3cb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.1930",
    "kind": "arxiv",
    "version": 1
  }
}