Pith Number

pith:ZZTZVWCD

pith:2026:ZZTZVWCDWNZRTAVK4UBJUNQWKV

not attested not anchored not stored refs pending

AlgMortar: a fully algebraic multiscale mortar preconditioner

Fabricio S. Sousa, Felipe Pereira, Luan F. Santos, Rafael T. Guiraldello, Roberto F. Ausas

arxiv:2607.22905 v1 · 2026-07-24 · 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{ZZTZVWCDWNZRTAVK4UBJUNQWKV}

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	2026-07-28T00:22:01.212309Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce679ad843b3731982aae5029a36165546d51137861039182b66774bde0d6ee0

Aliases

arxiv: 2607.22905 · arxiv_version: 2607.22905v1 · doi: 10.48550/arxiv.2607.22905 · pith_short_12: ZZTZVWCDWNZR · pith_short_16: ZZTZVWCDWNZRTAVK · pith_short_8: ZZTZVWCD

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/ZZTZVWCDWNZRTAVK4UBJUNQWKV \
  | 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: ce679ad843b3731982aae5029a36165546d51137861039182b66774bde0d6ee0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84b8b96bffa0f0a7eb35aea8386973c721a2c3ccecf7d4c0bc0ace109ed8f673",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-07-24T20:43:16Z",
    "title_canon_sha256": "a594dd6a2240efbdfc3097960de2079874db3cf8f57f0428a55b818f6dd0351f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.22905",
    "kind": "arxiv",
    "version": 1
  }
}