Pith Number

pith:2JADA2DJ

pith:2009:2JADA2DJKPMAJTVLGJ2MO7MRKT

not attested not anchored not stored refs pending

Proof of a universal lower bound on the shear viscosity to entropy density ratio

A.J.M. Medved, Ram Brustein

arxiv:0908.1473 v1 · 2009-08-11 · hep-th

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2JADA2DJKPMAJTVLGJ2MO7MRKT}

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	2026-05-18T02:34:37.930330Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d24030686953d804ceab3274c77d9154c245838e15ee0ba8b4668435b3b8eebf

Aliases

arxiv: 0908.1473 · arxiv_version: 0908.1473v1 · doi: 10.48550/arxiv.0908.1473 · pith_short_12: 2JADA2DJKPMA · pith_short_16: 2JADA2DJKPMAJTVL · pith_short_8: 2JADA2DJ

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/2JADA2DJKPMAJTVLGJ2MO7MRKT \
  | 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: d24030686953d804ceab3274c77d9154c245838e15ee0ba8b4668435b3b8eebf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6dd37ea30f2c8332cfc8e613f8bab6335fe9a668e9d8a7aba1e44ce2b30164af",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-08-11T07:48:55Z",
    "title_canon_sha256": "21a7dcbc83ab22a1c9e657cd049d5ed53c9756fb16b654e607a2da2f1432fec0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.1473",
    "kind": "arxiv",
    "version": 1
  }
}