Pith Number

pith:XACD3XT3

pith:2006:XACD3XT3MOL3OTFQJ2R3MLZNBD

not attested not anchored not stored refs pending

Fast linear algebra is stable

Ioana Dumitriu, James Demmel, Olga Holtz

arxiv:math/0612264 v3 · 2006-12-10 · math.NA · cs.CC · cs.DS

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XACD3XT3MOL3OTFQJ2R3MLZNBD}

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	2026-05-18T04:08:53.080060Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8043dde7b6397b74cb04ea3b62f2d08c0f684f602ad17353526fa1e20ad1f2e

Aliases

arxiv: math/0612264 · arxiv_version: math/0612264v3 · doi: 10.48550/arxiv.math/0612264 · pith_short_12: XACD3XT3MOL3 · pith_short_16: XACD3XT3MOL3OTFQ · pith_short_8: XACD3XT3

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/XACD3XT3MOL3OTFQJ2R3MLZNBD \
  | 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: b8043dde7b6397b74cb04ea3b62f2d08c0f684f602ad17353526fa1e20ad1f2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8460f851547ec8b1cec63979f4741c2bb7428a3b40b76eeb0640b45981fcfaff",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DS"
    ],
    "license": "",
    "primary_cat": "math.NA",
    "submitted_at": "2006-12-10T20:44:57Z",
    "title_canon_sha256": "ca45e65fa82232220d28f0983b871cab7f9234e93b22c8355c015f11a3f6b615"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0612264",
    "kind": "arxiv",
    "version": 3
  }
}