Pith Number

pith:U4ELG6IO

pith:2001:U4ELG6IOPD52WURW7YQY35DBMG

not attested not anchored not stored refs pending

Error correction code for protecting three-qubit quantum information against erasures

Chui-ping Yang, Shih-I Chu, Siyuan Han

arxiv:quant-ph/0112141 v2 · 2001-12-21 · 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{U4ELG6IOPD52WURW7YQY35DBMG}

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	2026-07-04T14:45:52.012061Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a708b3790e78fbab5236fe218df46161a78870c3a41ef65919e4d738f58b0b28

Aliases

arxiv: quant-ph/0112141 · arxiv_version: quant-ph/0112141v2 · doi: 10.48550/arxiv.quant-ph/0112141 · pith_short_12: U4ELG6IOPD52 · pith_short_16: U4ELG6IOPD52WURW · pith_short_8: U4ELG6IO

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/U4ELG6IOPD52WURW7YQY35DBMG \
  | 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: a708b3790e78fbab5236fe218df46161a78870c3a41ef65919e4d738f58b0b28

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5991944e0af86cfa773fce46563899151440c291c07569a88883b37e5886e6b2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2001-12-21T21:56:50Z",
    "title_canon_sha256": "33ada568bcc0baa4a777873a06e49b33348767886964c2c09339c4bdc67286ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0112141",
    "kind": "arxiv",
    "version": 2
  }
}