Pith Number

pith:4QFFN3LJ

pith:2001:4QFFN3LJXMV2VJURUJYCC3JG56

not attested not anchored not stored refs pending

Color Separation of Galaxy Types in the Sloan Digital Sky Survey Imaging Data

et al. ((1) Princeton University), Gillian R. Knapp (1), Iskra Strateva (1), Michael A. Strauss (1), Vijay K. Narayanan (1), Zeljko Ivezic (1)

arxiv:astro-ph/0107201 v1 · 2001-07-11 · 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{4QFFN3LJXMV2VJURUJYCC3JG56}

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

6 papers in Pith

Beyond traditional emission-line diagnostics: using autoencoders to uncover active galactic nuclei in DESI spectra

A machine learning approach to estimating HI deficiency in galaxies

No hidden monsters: Probing recently-quenched galaxies for obscured AGN with JWST-PRIMER MIRI and NIRCam

Bulgeless Evolution And the Rise of Discs (BEARD) I. Physical drivers of the mass-size relation for Milky Way-like galaxies

Strong Progenitor Age Bias in Supernova Cosmology. III. Progenitor Age as the Physical Origin of the Type Ia Supernova Magnitude Steps with Host Properties

Receipt and verification

First computed	2026-07-04T16:23:41.596138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e40a56ed69bb2baaa691a270216d26ef90b6339770fcd8cd7438a77c2e035877

Aliases

arxiv: astro-ph/0107201 · arxiv_version: astro-ph/0107201v1 · doi: 10.48550/arxiv.astro-ph/0107201 · pith_short_12: 4QFFN3LJXMV2 · pith_short_16: 4QFFN3LJXMV2VJUR · pith_short_8: 4QFFN3LJ

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/4QFFN3LJXMV2VJURUJYCC3JG56 \
  | 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: e40a56ed69bb2baaa691a270216d26ef90b6339770fcd8cd7438a77c2e035877

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da4f7ae4227ba412f1a30ca0a91b8b80ed1023f46912d30ccbe8b272f03b65f7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-07-11T15:54:12Z",
    "title_canon_sha256": "d4f3722b0852780e99fafac83add9358d77caa46decc02011abf4eefe10ab4b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0107201",
    "kind": "arxiv",
    "version": 1
  }
}