Pith Number

pith:76JNAX3R

pith:2026:76JNAX3R42XTIXSNHXSATTWNQP

not attested not anchored not stored refs pending

CoarseSolvers for Exascale Solution of Poisson Problems

Luke Olson, Paul Fischer, Thilina Ratnayaka

arxiv:2606.20496 v1 · 2026-06-18 · math.NA · cs.DC · cs.MS · 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{76JNAX3R42XTIXSNHXSATTWNQP}

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	2026-06-19T16:13:13.735169Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff92d05f71e6af345e4d3de409cecd83efbf7640d630291b76f6e7642c1af565

Aliases

arxiv: 2606.20496 · arxiv_version: 2606.20496v1 · doi: 10.48550/arxiv.2606.20496 · pith_short_12: 76JNAX3R42XT · pith_short_16: 76JNAX3R42XTIXSN · pith_short_8: 76JNAX3R

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/76JNAX3R42XTIXSNHXSATTWNQP \
  | 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: ff92d05f71e6af345e4d3de409cecd83efbf7640d630291b76f6e7642c1af565

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a372230afd7fba5416eea6e16caba9cad22d62093acc8fac7102b63f2209ce5",
    "cross_cats_sorted": [
      "cs.DC",
      "cs.MS",
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-06-18T17:11:17Z",
    "title_canon_sha256": "b0ab5c74a25e195bf7f95037d8ad01b1438d1b21a59de03d6c8807f3c610aab0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.20496",
    "kind": "arxiv",
    "version": 1
  }
}