Pith Number

pith:4Z6KEZLH

pith:2019:4Z6KEZLHJJXDIXAUIANQZMI4VE

not attested not anchored not stored refs pending

Additivity of entanglement of formation via entanglement-breaking space

Li-Jun Zhao, Lin Chen

arxiv:1901.04389 v1 · 2019-01-14 · 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{4Z6KEZLHJJXDIXAUIANQZMI4VE}

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	2026-05-17T23:51:30.275474Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e67ca265674a6e345c14401b0cb11ca935e15ffdc350d0d39b8534bcac2d17de

Aliases

arxiv: 1901.04389 · arxiv_version: 1901.04389v1 · doi: 10.48550/arxiv.1901.04389 · pith_short_12: 4Z6KEZLHJJXD · pith_short_16: 4Z6KEZLHJJXDIXAU · pith_short_8: 4Z6KEZLH

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/4Z6KEZLHJJXDIXAUIANQZMI4VE \
  | 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: e67ca265674a6e345c14401b0cb11ca935e15ffdc350d0d39b8534bcac2d17de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0464af1e249a264e053f241e3149ff5cb17a1a4be6883c66e744288f2ddd3592",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-01-14T16:39:12Z",
    "title_canon_sha256": "06dd3b37a09c1a885d6783cc7314abfabd958919d599dc28d05449e5e2395413"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.04389",
    "kind": "arxiv",
    "version": 1
  }
}