Pith Number

pith:FUT2BLXT

pith:2021:FUT2BLXTBOPRNOIQIIPMOC7R6J

not attested not anchored not stored refs pending

On the Similarity to Nonnegative and Metzler Hessenberg Forms

Anders Rantzer, Christian Grussler

arxiv:2103.04577 v3 · 2021-03-08 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FUT2BLXTBOPRNOIQIIPMOC7R6J}

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	2026-07-05T03:57:26.031170Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d27a0aef30b9f16b910421ec70bf1f263af08aec5b6014ce878056eef579633

Aliases

arxiv: 2103.04577 · arxiv_version: 2103.04577v3 · doi: 10.48550/arxiv.2103.04577 · pith_short_12: FUT2BLXTBOPR · pith_short_16: FUT2BLXTBOPRNOIQ · pith_short_8: FUT2BLXT

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/FUT2BLXTBOPRNOIQIIPMOC7R6J \
  | 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: 2d27a0aef30b9f16b910421ec70bf1f263af08aec5b6014ce878056eef579633

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3126bdc839369a06307a4c851dfa6b3c94986b2fde0b8c26788d96333cb020ee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2021-03-08T07:09:45Z",
    "title_canon_sha256": "8f90052d59439378df699f51ba69b24ff3be479baadfcc6c2c1cbfff23ee85c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.04577",
    "kind": "arxiv",
    "version": 3
  }
}