Pith Number

pith:WZY4YMP6

pith:2013:WZY4YMP6QKQ354MX2QCERCQTRB

not attested not anchored not stored refs pending

Unextendible Product Basis for Fermionic Systems

Bei Zeng, Jianxin Chen, Lin Chen

arxiv:1312.4218 v1 · 2013-12-16 · 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{WZY4YMP6QKQ354MX2QCERCQTRB}

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	2026-05-18T01:12:00.546241Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b671cc31fe82a1bef197d404488a1388692df855c5daf8df624e1c20cfec684f

Aliases

arxiv: 1312.4218 · arxiv_version: 1312.4218v1 · doi: 10.48550/arxiv.1312.4218 · pith_short_12: WZY4YMP6QKQ3 · pith_short_16: WZY4YMP6QKQ354MX · pith_short_8: WZY4YMP6

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/WZY4YMP6QKQ354MX2QCERCQTRB \
  | 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: b671cc31fe82a1bef197d404488a1388692df855c5daf8df624e1c20cfec684f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92b62bcb1c9c00abe6964525fc781086e2dcce1fd7239160abf98741d47e0a79",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-12-16T01:09:10Z",
    "title_canon_sha256": "3127d5afd75b3d6736276f407b308d149ef0e010aa2b1a5910c59674f1ba335a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.4218",
    "kind": "arxiv",
    "version": 1
  }
}