Pith Number

pith:XSUH73HM

pith:2008:XSUH73HM3PVY5U7ARO4C2VTZQW

not attested not anchored not stored refs pending

A note on grid transfer operators for multigrid methods

Marco Donatelli

arxiv:0807.2565 v1 · 2008-07-16 · 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{XSUH73HM3PVY5U7ARO4C2VTZQW}

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	2026-06-03T22:06:08.027367Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bca87fececdbeb8ed3e08bb82d5679859270f8430201c2f735c4a1d5fc3d9716

Aliases

arxiv: 0807.2565 · arxiv_version: 0807.2565v1 · doi: 10.48550/arxiv.0807.2565 · pith_short_12: XSUH73HM3PVY · pith_short_16: XSUH73HM3PVY5U7A · pith_short_8: XSUH73HM

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/XSUH73HM3PVY5U7ARO4C2VTZQW \
  | 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: bca87fececdbeb8ed3e08bb82d5679859270f8430201c2f735c4a1d5fc3d9716

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15fedbb8dfb2efdf32caec277ddca11af66d1d9d684b1ea66474f221cb966e41",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2008-07-16T13:20:34Z",
    "title_canon_sha256": "dcfeb3588217ce36bd9ad7b6d511ce95e7f4f2e1f6ec16e099834195b4f3807f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.2565",
    "kind": "arxiv",
    "version": 1
  }
}