Pith Number

pith:H3VRWNYU

pith:2012:H3VRWNYU2KEVTGK3GFJ7ILIHTB

not attested not anchored not stored refs pending

What buoyancy really is. A Generalized Archimedes Principle for sedimentation and ultracentrifugation

Alberto Parola, Eleonora Secchi, Roberto Piazza, Stefano Buzzaccaro

arxiv:1204.4548 v2 · 2012-04-20 · cond-mat.soft · physics.bio-ph · physics.flu-dyn · physics.geo-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{H3VRWNYU2KEVTGK3GFJ7ILIHTB}

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	2026-05-18T03:21:43.723694Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3eeb1b3714d28959995b3153f42d0798692baa4ceb43bd6783111446f59c9387

Aliases

arxiv: 1204.4548 · arxiv_version: 1204.4548v2 · doi: 10.48550/arxiv.1204.4548 · pith_short_12: H3VRWNYU2KEV · pith_short_16: H3VRWNYU2KEVTGK3 · pith_short_8: H3VRWNYU

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/H3VRWNYU2KEVTGK3GFJ7ILIHTB \
  | 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: 3eeb1b3714d28959995b3153f42d0798692baa4ceb43bd6783111446f59c9387

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4581beaeba1bdf9a5a604b53937e65e19c90d717a1db17bef02b0f0cd518f4e",
    "cross_cats_sorted": [
      "physics.bio-ph",
      "physics.flu-dyn",
      "physics.geo-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.soft",
    "submitted_at": "2012-04-20T07:40:41Z",
    "title_canon_sha256": "f13986f272ffa2763606786a075afbf5a5d9d4254061080aa12f79ed92a80b81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4548",
    "kind": "arxiv",
    "version": 2
  }
}