Pith Number

pith:3HU34XAT

pith:2017:3HU34XATQPNXJZOSBLKUVLYYKG

not attested not anchored not stored refs pending

Optimal interpolation and Compatible Relaxation in Classical Algebraic Multigrid

Fei Cao, James Brannick, Karsten Kahl, Rob Falgout, Xiaozhe Hu

arxiv:1703.10240 v1 · 2017-03-29 · 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{3HU34XATQPNXJZOSBLKUVLYYKG}

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	2026-05-18T00:47:37.573471Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9e9be5c1383db74e5d20ad54aaf18518e694dd82432fad8e1a5378b0d4f9b32

Aliases

arxiv: 1703.10240 · arxiv_version: 1703.10240v1 · doi: 10.48550/arxiv.1703.10240 · pith_short_12: 3HU34XATQPNX · pith_short_16: 3HU34XATQPNXJZOS · pith_short_8: 3HU34XAT

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/3HU34XATQPNXJZOSBLKUVLYYKG \
  | 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: d9e9be5c1383db74e5d20ad54aaf18518e694dd82432fad8e1a5378b0d4f9b32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "566275fae0c562f68b2cd77c903f174f37b14963d2c6fdf1cab092d6749ae267",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-03-29T20:39:00Z",
    "title_canon_sha256": "fd62ddc88d22d153a26bf7f76b0d1c91e8b6243bfb7ffbcd1dc7fa0c809f181f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.10240",
    "kind": "arxiv",
    "version": 1
  }
}