Pith Number

pith:2T37ITPM

pith:2016:2T37ITPMHNHPXGQ5M2OM2MNLQU

not attested not anchored not stored refs pending

Fast Hessenberg reduction of some rank structured matrices

Leonardo Robol, Luca Gemignani

arxiv:1612.04196 v1 · 2016-12-13 · 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{2T37ITPMHNHPXGQ5M2OM2MNLQU}

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	2026-05-18T00:55:05.176039Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4f7f44dec3b4efb9a1d669ccd31ab85169e4045edfe7fa88e072197f3ef37a3

Aliases

arxiv: 1612.04196 · arxiv_version: 1612.04196v1 · doi: 10.48550/arxiv.1612.04196 · pith_short_12: 2T37ITPMHNHP · pith_short_16: 2T37ITPMHNHPXGQ5 · pith_short_8: 2T37ITPM

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/2T37ITPMHNHPXGQ5M2OM2MNLQU \
  | 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: d4f7f44dec3b4efb9a1d669ccd31ab85169e4045edfe7fa88e072197f3ef37a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37d6b6694526111820aff320fdf513af4771a83dab805ed45f4dcdf31f95e115",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-12-13T14:23:34Z",
    "title_canon_sha256": "8a79a07660b5b47ef51ee4123f8a69d4b860917c4f67d19b6cb14f3af792aa3e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.04196",
    "kind": "arxiv",
    "version": 1
  }
}