Pith Number

pith:VI64NLGV

pith:2018:VI64NLGVJ4KOUDTTTW66MFU2XO

not attested not anchored not stored refs pending

Optimal control theory for quantum electrodynamics: an initial state problem

Alberto Castro, Angel Rubio, Heiko Appel

arxiv:1808.02678 v1 · 2018-08-08 · physics.optics · physics.comp-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{VI64NLGVJ4KOUDTTTW66MFU2XO}

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	2026-07-05T00:13:36.838834Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa3dc6acd54f14ea0e739dbde6169abb83085d6eeb9a543296b168ff74ec17d4

Aliases

arxiv: 1808.02678 · arxiv_version: 1808.02678v1 · doi: 10.48550/arxiv.1808.02678 · pith_short_12: VI64NLGVJ4KO · pith_short_16: VI64NLGVJ4KOUDTT · pith_short_8: VI64NLGV

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/VI64NLGVJ4KOUDTTTW66MFU2XO \
  | 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: aa3dc6acd54f14ea0e739dbde6169abb83085d6eeb9a543296b168ff74ec17d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3d227000e44e99fd9a6bc30b44d30ffe56224010f89404ab763add1f5e318d2",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-08-08T09:06:16Z",
    "title_canon_sha256": "51b8a9fbf2ee0f3fe1a7cf6a12b63de37204957201a518e678be6edda1437a8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02678",
    "kind": "arxiv",
    "version": 1
  }
}