Pith Number

pith:FYX2WWNM

pith:2026:FYX2WWNMBLMPKDJWFSJ6M6VZ3Q

not attested not anchored not stored refs pending

Computing accurate singular vectors and eigenvectors using mixed-precision Jacobi algorithms

Fran\c{c}oise Tisseur, Marcus Webb, Zhengbo Zhou

arxiv:2606.28069 v1 · 2026-06-26 · 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{FYX2WWNMBLMPKDJWFSJ6M6VZ3Q}

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	2026-06-29T01:14:56.911217Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e2fab59ac0ad8f50d362c93e67ab9dc2e7bb7209c354a2b86d0b15aad637ad8

Aliases

arxiv: 2606.28069 · arxiv_version: 2606.28069v1 · doi: 10.48550/arxiv.2606.28069 · pith_short_12: FYX2WWNMBLMP · pith_short_16: FYX2WWNMBLMPKDJW · pith_short_8: FYX2WWNM

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/FYX2WWNMBLMPKDJWFSJ6M6VZ3Q \
  | 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: 2e2fab59ac0ad8f50d362c93e67ab9dc2e7bb7209c354a2b86d0b15aad637ad8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cea302bbd6cd772ed23492e0be1f8fa43825559c6be1d23bee2f87a6a55c5666",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-06-26T13:30:04Z",
    "title_canon_sha256": "3075ba73b7fe68149f968f004aa6db4001c71efc3d858b2fb0b4f47e9fa9387b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.28069",
    "kind": "arxiv",
    "version": 1
  }
}