Pith Number

pith:Z6UZ4J76

pith:1995:Z6UZ4J76O62TMOFYGFEBRJYEPQ

not attested not anchored not stored refs pending

Interpretation of the evolution parameter of the Feynman parametrization of the Dirac equation

Edgardo T. Garcia Alvarez, Fabian H. Gaioli, Juan P. Aparicio

arxiv:quant-ph/9502015 v1 · 1995-02-16 · 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{Z6UZ4J76O62TMOFYGFEBRJYEPQ}

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	2026-05-18T04:34:46.479571Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cfa99e27fe77b53638b8314818a7047c16ef5c111b6960995f38d0b3417aa1e4

Aliases

arxiv: quant-ph/9502015 · arxiv_version: quant-ph/9502015v1 · doi: 10.48550/arxiv.quant-ph/9502015 · pith_short_12: Z6UZ4J76O62T · pith_short_16: Z6UZ4J76O62TMOFY · pith_short_8: Z6UZ4J76

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/Z6UZ4J76O62TMOFYGFEBRJYEPQ \
  | 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: cfa99e27fe77b53638b8314818a7047c16ef5c111b6960995f38d0b3417aa1e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8db26eb5d97593ebcb5ae61d7f48d761152fc8c2717184804c10be59f6f83c12",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1995-02-16T18:51:00Z",
    "title_canon_sha256": "8257f9e24e469510970406798147fb55294f535559c0492fc06b3b7aea7decfa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9502015",
    "kind": "arxiv",
    "version": 1
  }
}