Pith Number

pith:XXCK3NGL

pith:1998:XXCK3NGLDUO6QM4I7Y7VCJIR5E

not attested not anchored not stored refs pending

A Way Out of the Disc Angular Momentum Catastrophe in Hirarchical Hydrodynamical Simulations

A. Saiz, P.B. Tissera, R. Dominguez-Tenreiro

arxiv:astro-ph/9809172 v1 · 1998-09-14 · 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{XXCK3NGLDUO6QM4I7Y7VCJIR5E}

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	2026-07-04T14:16:01.631334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bdc4adb4cb1d1de83388fe3f512511e9112fa76cb59aff3aabc04cbcc7198ee3

Aliases

arxiv: astro-ph/9809172 · arxiv_version: astro-ph/9809172v1 · doi: 10.48550/arxiv.astro-ph/9809172 · pith_short_12: XXCK3NGLDUO6 · pith_short_16: XXCK3NGLDUO6QM4I · pith_short_8: XXCK3NGL

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/XXCK3NGLDUO6QM4I7Y7VCJIR5E \
  | 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: bdc4adb4cb1d1de83388fe3f512511e9112fa76cb59aff3aabc04cbcc7198ee3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1771ac1e41eeffa06a864c78569b41f4ed92dbfb761ed6494ecc51c5708833f2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-09-14T15:02:39Z",
    "title_canon_sha256": "7e9be725c472d237bfd15a2c4d9e4d632d1bc2bac2b7bef76baf67c693a2b490"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9809172",
    "kind": "arxiv",
    "version": 1
  }
}