Pith Number

pith:L4S5BSHH

pith:2018:L4S5BSHHWP25K7VGW4R3KDAQBN

not attested not anchored not stored refs pending

Reduced-basis method for the iterative solution of parametrized symmetric positive-definite linear systems

Ngoc-Cuong Nguyen, Yanlai Chen

arxiv:1804.06363 v1 · 2018-04-17 · 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{L4S5BSHHWP25K7VGW4R3KDAQBN}

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	2026-05-18T00:18:10.247533Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f25d0c8e7b3f5d57ea6b723b50c100b72987b32c89171357185a28e19632d1a

Aliases

arxiv: 1804.06363 · arxiv_version: 1804.06363v1 · doi: 10.48550/arxiv.1804.06363 · pith_short_12: L4S5BSHHWP25 · pith_short_16: L4S5BSHHWP25K7VG · pith_short_8: L4S5BSHH

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/L4S5BSHHWP25K7VGW4R3KDAQBN \
  | 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: 5f25d0c8e7b3f5d57ea6b723b50c100b72987b32c89171357185a28e19632d1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "383542394671be90f4388402024739456d80d8275c11cd620c75db6d0cdf4f5d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-04-17T16:38:50Z",
    "title_canon_sha256": "0e13dcc42f67c9611e8adcf1b876fb8fd4dfcd839aadc299a0e639de979f8dde"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.06363",
    "kind": "arxiv",
    "version": 1
  }
}