Pith Number

pith:VQTIHWEF

pith:2014:VQTIHWEFWH522CF7PZ656RUIL5

not attested not anchored not stored refs pending

(Un)decidable Problems about Reachability of Quantum Systems

Mingsheng Ying, Yangjia Li

arxiv:1401.6249 v1 · 2014-01-24 · cs.LO · quant-ph

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VQTIHWEFWH522CF7PZ656RUIL5}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:01:12.717264Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac2683d885b1fbad08bf7e7ddf46885f647d351b9002ba99b7d1e926c82bff97

Aliases

arxiv: 1401.6249 · arxiv_version: 1401.6249v1 · doi: 10.48550/arxiv.1401.6249 · pith_short_12: VQTIHWEFWH52 · pith_short_16: VQTIHWEFWH522CF7 · pith_short_8: VQTIHWEF

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/VQTIHWEFWH522CF7PZ656RUIL5 \
  | 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: ac2683d885b1fbad08bf7e7ddf46885f647d351b9002ba99b7d1e926c82bff97

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8a0aa75aba96c07d04edde657cc7ce5b08d296a44508c84ef46f24ee2f98138",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2014-01-24T03:47:29Z",
    "title_canon_sha256": "5d86d7630975c6215150036f062fba7b34838c2694799f2e9c7ca0bfad0aa450"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.6249",
    "kind": "arxiv",
    "version": 1
  }
}