Pith Number

pith:QFMFWFDU

pith:1997:QFMFWFDUBUBSVJ7DJDVTB22TFS

not attested not anchored not stored refs pending

On the Origin of the UV Upturn in Elliptical Galaxies. I. Sensitivity of UV Population Synthesis to Various Input Parameters

(1, 2), (2) NASA/GSFC, 3) ((1) Yale U., (3) Carnegie Observatories), Augustus Oemler, Jr. (1, Pierre Demarque (1), Sukyoung Yi

arxiv:astro-ph/9705173 v2 · 1997-05-21 · 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{QFMFWFDUBUBSVJ7DJDVTB22TFS}

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.

Receipt and verification

First computed	2026-05-18T03:47:42.762354Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81585b14740d032aa7e348eb30eb532cb57b98ca5b41d512d8817ea124271a10

Aliases

arxiv: astro-ph/9705173 · arxiv_version: astro-ph/9705173v2 · doi: 10.48550/arxiv.astro-ph/9705173 · pith_short_12: QFMFWFDUBUBS · pith_short_16: QFMFWFDUBUBSVJ7D · pith_short_8: QFMFWFDU

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/QFMFWFDUBUBSVJ7DJDVTB22TFS \
  | 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: 81585b14740d032aa7e348eb30eb532cb57b98ca5b41d512d8817ea124271a10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d0adb4a6c60c705e5b3aba1b7e4ebf1e804b6b84eb1ccfedc2a9b91199beb44",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-05-21T14:42:05Z",
    "title_canon_sha256": "4519fb50c0d6b42a81bcdad762f1dc40129f8d02a26beb37cde1c151ea690efa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9705173",
    "kind": "arxiv",
    "version": 2
  }
}