Pith Number

pith:UMQNPFYF

pith:2017:UMQNPFYFS3F6O2XR6EPKNFUG4P

not attested not anchored not stored refs pending

A flexible and adaptive Simpler GMRES with deflated restarting for shifted linear systems

Hong-Xiu Zhong, Xian-Ming Gu

arxiv:1707.05588 v3 · 2017-07-18 · 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{UMQNPFYFS3F6O2XR6EPKNFUG4P}

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	2026-06-04T18:11:10.611754Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a320d7970596cbe76af1f11ea69686e3cc3718203b4704bd204b7609dcad7697

Aliases

arxiv: 1707.05588 · arxiv_version: 1707.05588v3 · doi: 10.48550/arxiv.1707.05588 · pith_short_12: UMQNPFYFS3F6 · pith_short_16: UMQNPFYFS3F6O2XR · pith_short_8: UMQNPFYF

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/UMQNPFYFS3F6O2XR6EPKNFUG4P \
  | 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: a320d7970596cbe76af1f11ea69686e3cc3718203b4704bd204b7609dcad7697

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6221b14ad8b53a0be6026bb8401a99fed0d693df30bb700f21e7cac6fe9d27d9",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-07-18T12:34:32Z",
    "title_canon_sha256": "5b01b9a70fcd05efb2c1126993ef2cfa25d7d384803224eb84e7687df32d650e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.05588",
    "kind": "arxiv",
    "version": 3
  }
}