Pith Number

pith:GZL2TZBS

pith:2005:GZL2TZBSHRLHV5GCILI24RIWGW

not attested not anchored not stored refs pending

A concise reference to (projected) Sersic R^{1/n} quantities, including Concentration, Profile Slopes, Petrosian indices, and Kron Magnitudes

Alister W. Graham, Simon P. Driver

arxiv:astro-ph/0503176 v1 · 2005-03-08 · astro-ph

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

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	2026-05-18T03:57:01.241864Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3657a9e4323c567af4c242d1ae4516359e571898bfb4a42632558746287a08de

Aliases

arxiv: astro-ph/0503176 · arxiv_version: astro-ph/0503176v1 · doi: 10.48550/arxiv.astro-ph/0503176 · pith_short_12: GZL2TZBSHRLH · pith_short_16: GZL2TZBSHRLHV5GC · pith_short_8: GZL2TZBS

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/GZL2TZBSHRLHV5GCILI24RIWGW \
  | 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: 3657a9e4323c567af4c242d1ae4516359e571898bfb4a42632558746287a08de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06ed8362afef11c99a88a317aaa7ee412fa4cfc5f8e48c59eb14a309e02a7984",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-03-08T10:14:42Z",
    "title_canon_sha256": "bc27f0f6f45fead762d5795c6c24dc5b3c1ee646a673e06d4aeec58cd86dd30f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0503176",
    "kind": "arxiv",
    "version": 1
  }
}