Pith Number

pith:RUY43ZPL

pith:2016:RUY43ZPLU646ABYUI6V6NT2UHK

not attested not anchored not stored refs pending

A Direct Elliptic Solver Based on Hierarchically Low-rank Schur Complements

David Keyes, George Turkiyyah, Gustavo Ch\'avez

arxiv:1604.00617 v1 · 2016-04-03 · 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{RUY43ZPLU646ABYUI6V6NT2UHK}

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	2026-05-18T00:27:22.329586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d31cde5eba7b9e0071447abe6cf543aa2749bbda5ffd3d4a948be97fe1c56b2

Aliases

arxiv: 1604.00617 · arxiv_version: 1604.00617v1 · doi: 10.48550/arxiv.1604.00617 · pith_short_12: RUY43ZPLU646 · pith_short_16: RUY43ZPLU646ABYU · pith_short_8: RUY43ZPL

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/RUY43ZPLU646ABYUI6V6NT2UHK \
  | 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: 8d31cde5eba7b9e0071447abe6cf543aa2749bbda5ffd3d4a948be97fe1c56b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a7ffd6e200fd8a8b4b0e292a1cdd62ca4c77f1a5faacf2c60d8e3bc611d256c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2016-04-03T09:52:40Z",
    "title_canon_sha256": "e0c7f71662fe5ef39c89850c0e480080ae0f0f6299f9e8306469ec6a73c1c4f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.00617",
    "kind": "arxiv",
    "version": 1
  }
}