Pith Number

pith:Y6XSNP2I

pith:2016:Y6XSNP2IW4MFRGXWCLY76S62XF

not attested not anchored not stored refs pending

A New View of Classification in Astronomy with the Archetype Technique: An Astronomical Case of the NP-complete Set Cover Problem

Guangtun Zhu (JHU)

arxiv:1606.07156 v1 · 2016-06-23 · astro-ph.IM · 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{Y6XSNP2IW4MFRGXWCLY76S62XF}

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

1 paper in Pith

A virtually connected probabilistic computer as a solver for higher-order, densely connected, or reconfigurable combinatorial optimisation problems

Receipt and verification

First computed	2026-05-18T01:11:58.566471Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c7af26bf48b718589af612f1ff4bdab953140edfabd90b801446cf1098ee7903

Aliases

arxiv: 1606.07156 · arxiv_version: 1606.07156v1 · doi: 10.48550/arxiv.1606.07156 · pith_short_12: Y6XSNP2IW4MF · pith_short_16: Y6XSNP2IW4MFRGXW · pith_short_8: Y6XSNP2I

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/Y6XSNP2IW4MFRGXWCLY76S62XF \
  | 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: c7af26bf48b718589af612f1ff4bdab953140edfabd90b801446cf1098ee7903

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88811d2ef0a59eebd314980ba0eddca22d95cc9c0bd82ba69e6252c37acd7a5c",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2016-06-23T01:26:44Z",
    "title_canon_sha256": "6dea45cb9289af526e847d097af21306aec7a3062487658c7bd6cd4be5d13ba9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.07156",
    "kind": "arxiv",
    "version": 1
  }
}