Pith Number

pith:QFCFHKZG

pith:2014:QFCFHKZGYGYZO7ZLQAFHNQDY2I

not attested not anchored not stored refs pending

Octahedral norms in spaces of operators

Abraham Rueda Zoca, Gin\'es L\'opez-P\'erez, Julio Becerra Guerrero

arxiv:1407.6038 v1 · 2014-07-22 · 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{QFCFHKZGYGYZO7ZLQAFHNQDY2I}

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	2026-05-18T02:46:59.251430Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

814453ab26c1b1977f2b800a76c078d21b13f8feb1f21fccea70fb3ab58ab25c

Aliases

arxiv: 1407.6038 · arxiv_version: 1407.6038v1 · doi: 10.48550/arxiv.1407.6038 · pith_short_12: QFCFHKZGYGYZ · pith_short_16: QFCFHKZGYGYZO7ZL · pith_short_8: QFCFHKZG

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/QFCFHKZGYGYZO7ZLQAFHNQDY2I \
  | 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: 814453ab26c1b1977f2b800a76c078d21b13f8feb1f21fccea70fb3ab58ab25c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "096e3c80b708f156ad9603970d047ac4b1e4750c93b05e8e01a13816d9599db0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2014-07-22T20:58:11Z",
    "title_canon_sha256": "4c61ff5e68211c17c10b9f8b8b1c840059099bea1324d1ff3f31dad0219c33c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.6038",
    "kind": "arxiv",
    "version": 1
  }
}