Pith Number

pith:NU4R3AQN

pith:2019:NU4R3AQN6PWICSDVR6SXITMHWZ

not attested not anchored not stored refs pending

Connecting optical morphology, environment, and HI mass fraction for low-redshift galaxies using deep learning

John F. Wu

arxiv:2001.00018 v2 · 2019-12-31 · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NU4R3AQN6PWICSDVR6SXITMHWZ}

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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

A machine learning approach to estimating HI deficiency in galaxies

Receipt and verification

First computed	2026-07-05T01:34:51.471673Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d391d820df3ec8148758fa5744d87b6423c83b590541e089737744cb84b6b96

Aliases

arxiv: 2001.00018 · arxiv_version: 2001.00018v2 · doi: 10.48550/arxiv.2001.00018 · pith_short_12: NU4R3AQN6PWI · pith_short_16: NU4R3AQN6PWICSDV · pith_short_8: NU4R3AQN

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/NU4R3AQN6PWICSDVR6SXITMHWZ \
  | 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: 6d391d820df3ec8148758fa5744d87b6423c83b590541e089737744cb84b6b96

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "97ec11d2c514c5fd1ee258c5affd36fee5649d1622c5cdb9fa0375fc1c443396",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-12-31T19:00:00Z",
    "title_canon_sha256": "f9d9a39bf8acdd6aa3a6d8084f7b8e6282fe73df2c014b851b3b7255c710b3f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.00018",
    "kind": "arxiv",
    "version": 2
  }
}