Pith Number

pith:WT5HEGEY

pith:1997:WT5HEGEYCPBDCDWQ52Z23NAMYN

not attested not anchored not stored refs pending

HOP: A New Group-Finding Algorithm for N-body Simulations

Daniel J. Eisenstein, Piet Hut (IAS, Princeton)

arxiv:astro-ph/9712200 v1 · 1997-12-16 · 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{WT5HEGEYCPBDCDWQ52Z23NAMYN}

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.

Cited by

4 papers in Pith

Virial-based extraction of structures in numerical simulations: The vibes tool

Non-linear Structure Formation in Planck+DESI Favoured Interacting Dark Energy Cosmologies

Centrally concentrated star formation in young clusters II: Jet feedback

Virial-based extraction of structures in numerical simulations: The vibes tool

Receipt and verification

First computed	2026-07-04T17:25:18.520941Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4fa72189813c2310ed0eeb3adb40cc36c96ab4f8b68c28cc0118552bd17fee2

Aliases

arxiv: astro-ph/9712200 · arxiv_version: astro-ph/9712200v1 · doi: 10.48550/arxiv.astro-ph/9712200 · pith_short_12: WT5HEGEYCPBD · pith_short_16: WT5HEGEYCPBDCDWQ · pith_short_8: WT5HEGEY

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/WT5HEGEYCPBDCDWQ52Z23NAMYN \
  | 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: b4fa72189813c2310ed0eeb3adb40cc36c96ab4f8b68c28cc0118552bd17fee2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "509e4443c2c32861b858f8ee8a9b31de44915d7c027c9d3d5ad3215375d0f1d2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-12-16T01:53:41Z",
    "title_canon_sha256": "0b3c2caa638e2fdcc5b16fb9b1a8aebf22e15914e5125163e2395de5767803e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9712200",
    "kind": "arxiv",
    "version": 1
  }
}