Pith Number

pith:QYWZ5H4P

pith:2008:QYWZ5H4PIILX36OUPMXIQBMXCS

not attested not anchored not stored refs pending

Almost every set of $N\ge d+1$ orthogonal states on $d^{\otimes n}$ is locally indistinguishable

Scott M. Cohen

arxiv:0801.3993 v1 · 2008-01-25 · 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{QYWZ5H4PIILX36OUPMXIQBMXCS}

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	2026-05-18T02:45:49.015006Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

862d9e9f8f42177df9d47b2e880597149715e405b0b1fdfa59c46a156e553021

Aliases

arxiv: 0801.3993 · arxiv_version: 0801.3993v1 · doi: 10.48550/arxiv.0801.3993 · pith_short_12: QYWZ5H4PIILX · pith_short_16: QYWZ5H4PIILX36OU · pith_short_8: QYWZ5H4P

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/QYWZ5H4PIILX36OUPMXIQBMXCS \
  | 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: 862d9e9f8f42177df9d47b2e880597149715e405b0b1fdfa59c46a156e553021

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6cacf2aa9a0e2a75a4b243946c014a3a8dbae84f3cab3e371cf86862bcc45753",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2008-01-25T18:48:46Z",
    "title_canon_sha256": "a32ff8979e0d15f774c245d14302186922f7c3df021353412d72bf7dddf4ffb7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.3993",
    "kind": "arxiv",
    "version": 1
  }
}