Pith Number

pith:SGFWOE3R

pith:2018:SGFWOE3R5DHYNAFTSZURGKHR7E

not attested not anchored not stored refs pending

Better numerical approximation by Durrmeyer type operators

Ana Maria Acu, Gancho Tachev, Vijay Gupta

arxiv:1810.06829 v1 · 2018-10-16 · 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{SGFWOE3R5DHYNAFTSZURGKHR7E}

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	2026-05-18T00:03:11.424873Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

918b671371e8cf8680b396691328f1f929f543ba2df972654a13bd0760b353ec

Aliases

arxiv: 1810.06829 · arxiv_version: 1810.06829v1 · doi: 10.48550/arxiv.1810.06829 · pith_short_12: SGFWOE3R5DHY · pith_short_16: SGFWOE3R5DHYNAFT · pith_short_8: SGFWOE3R

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/SGFWOE3R5DHYNAFTSZURGKHR7E \
  | 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: 918b671371e8cf8680b396691328f1f929f543ba2df972654a13bd0760b353ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2dc65219c386829511026d56ad8694899b4561c94b38cf5aa5615a53f72e16a2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-10-16T06:15:41Z",
    "title_canon_sha256": "9e85d3d1bdb922a22f18d548a1b1d5ab2d5d0ac16734d8270757f8cd26894849"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.06829",
    "kind": "arxiv",
    "version": 1
  }
}