Pith Number

pith:F7NPC77A

pith:2012:F7NPC77AC6W2Z472AXI3JG2GYI

not attested not anchored not stored refs pending

Extremal extensions of entanglement witnesses and their connection with UPB

Arvind, R. Sengupta

arxiv:1211.3294 v1 · 2012-11-14 · 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{F7NPC77AC6W2Z472AXI3JG2GYI}

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	2026-05-18T02:45:49.838471Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fdaf17fe017adacf3fa05d1b49b46c22e24a46032d0d20146fd04a8c3e02219

Aliases

arxiv: 1211.3294 · arxiv_version: 1211.3294v1 · doi: 10.48550/arxiv.1211.3294 · pith_short_12: F7NPC77AC6W2 · pith_short_16: F7NPC77AC6W2Z472 · pith_short_8: F7NPC77A

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/F7NPC77AC6W2Z472AXI3JG2GYI \
  | 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: 2fdaf17fe017adacf3fa05d1b49b46c22e24a46032d0d20146fd04a8c3e02219

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "442f33dc77c5a024dd8fe2d467ecfbb7ef74c048091064f242e674cdb8a386e6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-11-14T12:52:26Z",
    "title_canon_sha256": "e6806d7a4fb6b254ce5f2a3fa806f979e8f8595ce3ab06abdb05b992d3c6f6b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.3294",
    "kind": "arxiv",
    "version": 1
  }
}