Pith Number

pith:FHOD73TW

pith:2016:FHOD73TWT2X5VVHNIRJC7WLT6Q

not attested not anchored not stored refs pending

Near-exponential surface densities as hydrostatic, nonequilibrium profiles in galaxy discs

Bruce G. Elmegreen (IBM Watson Research Ctr.), Curtis Struck (Iowa State)

arxiv:1609.08957 v1 · 2016-09-28 · astro-ph.GA · nlin.AO · physics.class-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{FHOD73TWT2X5VVHNIRJC7WLT6Q}

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	2026-05-18T00:59:18.868747Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29dc3fee769eafdad4ed44522fd973f42174e1b067952df50a4cb5bf15821044

Aliases

arxiv: 1609.08957 · arxiv_version: 1609.08957v1 · doi: 10.48550/arxiv.1609.08957 · pith_short_12: FHOD73TWT2X5 · pith_short_16: FHOD73TWT2X5VVHN · pith_short_8: FHOD73TW

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/FHOD73TWT2X5VVHNIRJC7WLT6Q \
  | 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: 29dc3fee769eafdad4ed44522fd973f42174e1b067952df50a4cb5bf15821044

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c95cd419a41eccf1b5e82e9bc71c4ad8f4b7c5db03041b693fe859dab2b95baf",
    "cross_cats_sorted": [
      "nlin.AO",
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-09-28T15:15:38Z",
    "title_canon_sha256": "3c8be21518180f94b6d00c6fa793c35f8f0a8c3eabc3846c0cb72e275aa5e02f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.08957",
    "kind": "arxiv",
    "version": 1
  }
}