Pith Number

pith:NEKIF4B6

pith:2003:NEKIF4B6UYBCQCSYCVY4LUZQXW

not attested not anchored not stored refs pending

Two interacting hard disks within a circular cavity: towards a quantal equation of states

K. Nakamura, N. Nakazono, T. Kato

arxiv:quant-ph/0309076 v1 · 2003-09-09 · quant-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{NEKIF4B6UYBCQCSYCVY4LUZQXW}

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	2026-07-04T14:46:24.337407Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

691482f03ea602280a581571c5d330bd83a5f8e44ebb1ee7c9ddc7fc8f7ef0ca

Aliases

arxiv: quant-ph/0309076 · arxiv_version: quant-ph/0309076v1 · doi: 10.48550/arxiv.quant-ph/0309076 · pith_short_12: NEKIF4B6UYBC · pith_short_16: NEKIF4B6UYBCQCSY · pith_short_8: NEKIF4B6

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/NEKIF4B6UYBCQCSYCVY4LUZQXW \
  | 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: 691482f03ea602280a581571c5d330bd83a5f8e44ebb1ee7c9ddc7fc8f7ef0ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f3e40ea9fbe750ae713026b788b384baa582f74ece09e565c54592d3ec03a44",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2003-09-09T12:19:52Z",
    "title_canon_sha256": "d57e225f15043c7056f822eaf1e2db15634b95e5ffd56021e98222c9ca8c0e98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0309076",
    "kind": "arxiv",
    "version": 1
  }
}