Pith Number

pith:SKP2GNNU

pith:2014:SKP2GNNUBDYLTADQI3IABGRDZJ

not attested not anchored not stored refs pending

Finite sections of truncated Toeplitz operators

Steffen Roch

arxiv:1401.5237 v1 · 2014-01-21 · math.OA · math.FA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SKP2GNNUBDYLTADQI3IABGRDZJ}

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	2026-05-18T03:01:34.436749Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

929fa335b408f0b9807046d0009a23ca4eaab71e5765a95df6607c2d9d6dde9a

Aliases

arxiv: 1401.5237 · arxiv_version: 1401.5237v1 · doi: 10.48550/arxiv.1401.5237 · pith_short_12: SKP2GNNUBDYL · pith_short_16: SKP2GNNUBDYLTADQ · pith_short_8: SKP2GNNU

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/SKP2GNNUBDYLTADQI3IABGRDZJ \
  | 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: 929fa335b408f0b9807046d0009a23ca4eaab71e5765a95df6607c2d9d6dde9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d483174e6f7eb8f317d1868e98d01f580eefa8c1121c35abcaf9afd57db148a",
    "cross_cats_sorted": [
      "math.FA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2014-01-21T09:46:19Z",
    "title_canon_sha256": "e5972d4272d802026954c2d3cb9d88d6a30b2806058293d97affe67b5da3d2bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.5237",
    "kind": "arxiv",
    "version": 1
  }
}