Pith Number

pith:KNXWYDLD

pith:2008:KNXWYDLDSGQW2G7HQ75ZBENYMY

not attested not anchored not stored refs pending

Simultaneous preconditioning and symmetrization of non-symmetric linear systems

Amir Moradifam, Nassif Ghoussoub

arxiv:0801.3865 v1 · 2008-01-25 · 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{KNXWYDLDSGQW2G7HQ75ZBENYMY}

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	2026-06-03T22:06:04.214680Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

536f6c0d6391a16d1be787fb9091b8660acadc4ae7d0c032fc53a9f76b94b5f8

Aliases

arxiv: 0801.3865 · arxiv_version: 0801.3865v1 · doi: 10.48550/arxiv.0801.3865 · pith_short_12: KNXWYDLDSGQW · pith_short_16: KNXWYDLDSGQW2G7H · pith_short_8: KNXWYDLD

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/KNXWYDLDSGQW2G7HQ75ZBENYMY \
  | 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: 536f6c0d6391a16d1be787fb9091b8660acadc4ae7d0c032fc53a9f76b94b5f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "206c76f22a46f29c638944eda36288a23aa3f0b16704a7ea0d47be365b01da4b",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "",
    "primary_cat": "math.NA",
    "submitted_at": "2008-01-25T01:24:04Z",
    "title_canon_sha256": "4bb09ee2c18aef330bbedf35d962988e477256b08ab95496b7cdd1b52a1b28c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.3865",
    "kind": "arxiv",
    "version": 1
  }
}