Pith Number

pith:CAY7HBD3

pith:2014:CAY7HBD3XBC7ZQC57XPYTND67N

not attested not anchored not stored refs pending

A class of unambiguous state discrimination problems achievable by separable measurements but impossible by local operations and classical communication

Scott M. Cohen

arxiv:1408.1142 v2 · 2014-08-05 · 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{CAY7HBD3XBC7ZQC57XPYTND67N}

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	2026-05-18T01:42:23.489199Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1031f3847bb845fcc05dfddf89b47efb6c2a0c93e2ea11630fac6c6d385b39f3

Aliases

arxiv: 1408.1142 · arxiv_version: 1408.1142v2 · doi: 10.48550/arxiv.1408.1142 · pith_short_12: CAY7HBD3XBC7 · pith_short_16: CAY7HBD3XBC7ZQC5 · pith_short_8: CAY7HBD3

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/CAY7HBD3XBC7ZQC57XPYTND67N \
  | 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: 1031f3847bb845fcc05dfddf89b47efb6c2a0c93e2ea11630fac6c6d385b39f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a1065adcaaec9fa9b2b308e0f32fa7dce634b76bc6e3fc218de615cf41b2e93",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-08-05T23:32:33Z",
    "title_canon_sha256": "6e735569ee5ec59834b588d7b01192de85d1d3a20a17f8fce1a04e89c14f053a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.1142",
    "kind": "arxiv",
    "version": 2
  }
}