Pith Number

pith:UP5FMA6E

pith:2002:UP5FMA6EJMQOMFM5NYL7LTRZI5

not attested not anchored not stored refs pending

Quantum Limit on Computational Time and Speed

A.K. Pati, A. Mitra, R. Ramanna, S.R. Jain

arxiv:quant-ph/0207144 v1 · 2002-07-25 · 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{UP5FMA6EJMQOMFM5NYL7LTRZI5}

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	2026-05-18T01:38:00.018442Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3fa5603c44b20e6159d6e17f5ce39477123c29fd90db8941983d5de47a2980c

Aliases

arxiv: quant-ph/0207144 · arxiv_version: quant-ph/0207144v1 · doi: 10.48550/arxiv.quant-ph/0207144 · pith_short_12: UP5FMA6EJMQO · pith_short_16: UP5FMA6EJMQOMFM5 · pith_short_8: UP5FMA6E

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/UP5FMA6EJMQOMFM5NYL7LTRZI5 \
  | 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: a3fa5603c44b20e6159d6e17f5ce39477123c29fd90db8941983d5de47a2980c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9c3329eec630dd8380480dc5b436bf9fa2f2808433ac9c041cd61b1fd0b2e21",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2002-07-25T06:45:33Z",
    "title_canon_sha256": "61661eed114ba82dc9888feec765eb5f2f01ea7de57b92d5113c8047ebd90718"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0207144",
    "kind": "arxiv",
    "version": 1
  }
}