Pith Number

pith:ZN2PYD66

pith:2019:ZN2PYD662LA2LNPQNYRC4OPNYV

not attested not anchored not stored refs pending

A galaxy classification grid that better recognises early-type galaxy morphology

Alister W. Graham

arxiv:1907.09791 v1 · 2019-07-23 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZN2PYD662LA2LNPQNYRC4OPNYV}

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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

1 paper in Pith

Galaxy morphology dependent (black hole mass)-(velocity dispersion) relations: implications for gravitational wave forecasts and cosmological simulations

Receipt and verification

First computed	2026-05-17T23:39:50.024677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb74fc0fded2c1a5b5f06e222e39edc544d529deabc5ac7d0c619273a97c22df

Aliases

arxiv: 1907.09791 · arxiv_version: 1907.09791v1 · doi: 10.48550/arxiv.1907.09791 · pith_short_12: ZN2PYD662LA2 · pith_short_16: ZN2PYD662LA2LNPQ · pith_short_8: ZN2PYD66

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/ZN2PYD662LA2LNPQNYRC4OPNYV \
  | 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: cb74fc0fded2c1a5b5f06e222e39edc544d529deabc5ac7d0c619273a97c22df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6280d984546c3be51312691d12c829b85bc78cc3b198d2f26f083ef2f6e9fa66",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-07-23T09:53:38Z",
    "title_canon_sha256": "83eec21bc0e5c75bfb0b2abba268db9004abec0c7f74ecce511cf9698b033d1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.09791",
    "kind": "arxiv",
    "version": 1
  }
}