Pith Number

pith:NI5YOSGG

pith:1994:NI5YOSGGYAZCEBE57FNUOGEVD2

not attested not anchored not stored refs pending

A general formulation of discrete-time quantum mechanics, restrictions on the action and the relation of unitarity to the existence theorem for initial-value problems

M. Khorrami

arxiv:quant-ph/9412008 v1 · 1994-12-28 · 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{NI5YOSGGYAZCEBE57FNUOGEVD2}

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	2026-05-18T01:37:53.522559Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a3b8748c6c03222049df95b4718951e8e8b14c66ac9257cf9b467a58ca261a8

Aliases

arxiv: quant-ph/9412008 · arxiv_version: quant-ph/9412008v1 · doi: 10.48550/arxiv.quant-ph/9412008 · pith_short_12: NI5YOSGGYAZC · pith_short_16: NI5YOSGGYAZCEBE5 · pith_short_8: NI5YOSGG

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/NI5YOSGGYAZCEBE57FNUOGEVD2 \
  | 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: 6a3b8748c6c03222049df95b4718951e8e8b14c66ac9257cf9b467a58ca261a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2c1779bb06b165bd68252cc4105a0411d807b40330bf04c4a18b7eaabbe4532",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1994-12-28T08:16:58Z",
    "title_canon_sha256": "f7a7d20ef6387d9e6ae4a4ea74d4e4e58fbfed3d231a7d7189b5090f9b36c8a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9412008",
    "kind": "arxiv",
    "version": 1
  }
}