Pith Number

pith:VUZAD4RQ

pith:2017:VUZAD4RQK6M4MAYMPBGYDLIT6B

not attested not anchored not stored refs pending

An automatic taxonomy of galaxy morphology using unsupervised machine learning

Alex Hocking (Hertfordshire), James E. Geach, Neil Davey, Yi Sun

arxiv:1709.05834 v1 · 2017-09-18 · astro-ph.IM · astro-ph.CO · 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{VUZAD4RQK6M4MAYMPBGYDLIT6B}

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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

Robustness Analysis of USmorph: II. Optimizing Feature Extraction, Dimensionality Reduction, and Clustering for Unsupervised Galaxy Morphology Classification

Receipt and verification

First computed	2026-05-18T00:31:11.577844Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad3201f2305799c6030c784d81ad13f076ee5dbf12989feede894dc5ab1462aa

Aliases

arxiv: 1709.05834 · arxiv_version: 1709.05834v1 · doi: 10.48550/arxiv.1709.05834 · pith_short_12: VUZAD4RQK6M4 · pith_short_16: VUZAD4RQK6M4MAYM · pith_short_8: VUZAD4RQ

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/VUZAD4RQK6M4MAYMPBGYDLIT6B \
  | 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: ad3201f2305799c6030c784d81ad13f076ee5dbf12989feede894dc5ab1462aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75ea169799d1fdf7bb6e7b1f1659d048b53ce05e6793f333826de917bd1a80a8",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2017-09-18T09:36:16Z",
    "title_canon_sha256": "596fac4725023d98f5e2cee19514934377df25ba9796cc5d8577328599cfd7af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.05834",
    "kind": "arxiv",
    "version": 1
  }
}