Pith Number

pith:RGJ5KF56

pith:2019:RGJ5KF56PQ2HLBAWUSTY2CSG4B

not attested not anchored not stored refs pending

Universal limitations on implementing resourceful unitary evolutions

Hiroyasu Tajima, Ryuji Takagi

arxiv:1909.01336 v2 · 2019-09-03 · 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{RGJ5KF56PQ2HLBAWUSTY2CSG4B}

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	2026-07-05T00:40:25.388996Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8993d517be7c34758416a4a78d0a46e076a69eaab999ea017d5f9add0519bcaf

Aliases

arxiv: 1909.01336 · arxiv_version: 1909.01336v2 · doi: 10.48550/arxiv.1909.01336 · pith_short_12: RGJ5KF56PQ2H · pith_short_16: RGJ5KF56PQ2HLBAW · pith_short_8: RGJ5KF56

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/RGJ5KF56PQ2HLBAWUSTY2CSG4B \
  | 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: 8993d517be7c34758416a4a78d0a46e076a69eaab999ea017d5f9add0519bcaf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4c29fe0876c2ba3b7da01ff383e19be96591a5b80fdd705bb075334ad5dc658",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-09-03T17:59:45Z",
    "title_canon_sha256": "9f86051650c44e3aa444d97207c6340af94017a64c6ad2b15994184c3cff8a44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.01336",
    "kind": "arxiv",
    "version": 2
  }
}