Pith Number

pith:C6MQFGAE

pith:2018:C6MQFGAET3PKFTCH3OFSAXA6S4

not attested not anchored not stored refs pending

A Multigrid method for nonlocal problems: non-diagonally dominant Toeplitz-plus-tridiagonal systems

Minghua Chen, Stefano Serra-Capizzano, Sven-Erik Ekstr\"om

arxiv:1808.09595 v1 · 2018-08-29 · math.NA · cs.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{C6MQFGAET3PKFTCH3OFSAXA6S4}

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	2026-06-04T20:13:16.898638Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17990298049edea2cc47db8b205c1e9705c74fbdebed81165c4d8a699af692e3

Aliases

arxiv: 1808.09595 · arxiv_version: 1808.09595v1 · doi: 10.48550/arxiv.1808.09595 · pith_short_12: C6MQFGAET3PK · pith_short_16: C6MQFGAET3PKFTCH · pith_short_8: C6MQFGAE

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/C6MQFGAET3PKFTCH3OFSAXA6S4 \
  | 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: 17990298049edea2cc47db8b205c1e9705c74fbdebed81165c4d8a699af692e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8b61261cee616531f21fdbec80c43235c17435d3e131c154d7ec19740a2cac3",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-08-29T01:04:13Z",
    "title_canon_sha256": "6ef78d78dab48d42f46787cff59f85f1c1dc13114224abf1e9f9f172608bb029"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.09595",
    "kind": "arxiv",
    "version": 1
  }
}