Pith Number

pith:QEHYN6QQ

pith:2017:QEHYN6QQKTBTAPJWXUKC5GEUD5

not attested not anchored not stored refs pending

On the adjoint of Hilbert space operators

Zolt\'an Sebesty\'en, Zsigmond Tarcsay

arxiv:1711.08391 v1 · 2017-11-22 · math.FA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QEHYN6QQKTBTAPJWXUKC5GEUD5}

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	2026-05-18T00:29:49.974405Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

810f86fa1054c3303d36bd142e98941f7d701f58e7c7712e2a51f24d94ee5779

Aliases

arxiv: 1711.08391 · arxiv_version: 1711.08391v1 · doi: 10.48550/arxiv.1711.08391 · pith_short_12: QEHYN6QQKTBT · pith_short_16: QEHYN6QQKTBTAPJW · pith_short_8: QEHYN6QQ

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/QEHYN6QQKTBTAPJWXUKC5GEUD5 \
  | 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: 810f86fa1054c3303d36bd142e98941f7d701f58e7c7712e2a51f24d94ee5779

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c3515d27bb2e035316c4dce88e090f8d2e6bb938ae61c82f7a17ec9e193f854",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2017-11-22T17:00:29Z",
    "title_canon_sha256": "dc8d53c1cb2a7770b8ee123551b25f61480a1d7f7e11df2fcc4546daca193c71"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.08391",
    "kind": "arxiv",
    "version": 1
  }
}