Pith Number

pith:O7K3C2HQ

pith:2017:O7K3C2HQ7E77ASO3X2AYVR3AAU

not attested not anchored not stored refs pending

Smolyak's algorithm: A powerful black box for the acceleration of scientific computations

Raul Tempone, Soeren Wolfers

arxiv:1703.08872 v3 · 2017-03-26 · 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{O7K3C2HQ7E77ASO3X2AYVR3AAU}

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	2026-05-18T00:10:47.838046Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77d5b168f0f93ff049dbbe818ac76005240157fcb462f9b51c6fb2ae9209bbc6

Aliases

arxiv: 1703.08872 · arxiv_version: 1703.08872v3 · doi: 10.48550/arxiv.1703.08872 · pith_short_12: O7K3C2HQ7E77 · pith_short_16: O7K3C2HQ7E77ASO3 · pith_short_8: O7K3C2HQ

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/O7K3C2HQ7E77ASO3X2AYVR3AAU \
  | 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: 77d5b168f0f93ff049dbbe818ac76005240157fcb462f9b51c6fb2ae9209bbc6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef9883d16103c4ff6beb1aa6f7ce1f6db40c6a82582ee2a3067e1f170290027e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-03-26T21:04:24Z",
    "title_canon_sha256": "325bf855bb2ad78f74449f4569349dfaadf4044d435ded9ed2d993d37648b2aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.08872",
    "kind": "arxiv",
    "version": 3
  }
}