Pith Number

pith:F3NU2MEA

pith:2015:F3NU2MEAVYDYGEA72C4Y4BYEUK

not attested not anchored not stored refs pending

Tikhonov and Landweber convergence rates: characterization by interpolation spaces

Roman Andreev

arxiv:1503.05742 v4 · 2015-03-19 · 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{F3NU2MEAVYDYGEA72C4Y4BYEUK}

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	2026-05-18T01:31:40.137699Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2edb4d3080ae0783101fd0b98e0704a2a00d5362c9e769987b28742fad4ec24b

Aliases

arxiv: 1503.05742 · arxiv_version: 1503.05742v4 · doi: 10.48550/arxiv.1503.05742 · pith_short_12: F3NU2MEAVYDY · pith_short_16: F3NU2MEAVYDYGEA7 · pith_short_8: F3NU2MEA

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/F3NU2MEAVYDYGEA72C4Y4BYEUK \
  | 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: 2edb4d3080ae0783101fd0b98e0704a2a00d5362c9e769987b28742fad4ec24b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55409e8e6069ee372fa581516675924a65e686f6b532cc510e742efbe757b304",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-03-19T12:40:36Z",
    "title_canon_sha256": "58bb58f88814cde4bb5e40e0afad487acf2af20e5f5bc91b6b70ad97e50b7b9b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.05742",
    "kind": "arxiv",
    "version": 4
  }
}