Pith Number

pith:YVIS5NXN

pith:2017:YVIS5NXNR5TKDL4FQCGVBNBZTX

not attested not anchored not stored refs pending

Weierstrass method for quaternionic polynomial root-finding

Fernando Miranda, M. Irene Falc\~ao, M. Joana Soares, Ricardo Severino

arxiv:1702.04935 v1 · 2017-02-16 · 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{YVIS5NXNR5TKDL4FQCGVBNBZTX}

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	2026-05-18T00:23:45.938380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c5512eb6ed8f66a1af85808d50b4399dc4016938cf18cbb51b6ee3baae28bde0

Aliases

arxiv: 1702.04935 · arxiv_version: 1702.04935v1 · doi: 10.48550/arxiv.1702.04935 · pith_short_12: YVIS5NXNR5TK · pith_short_16: YVIS5NXNR5TKDL4F · pith_short_8: YVIS5NXN

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/YVIS5NXNR5TKDL4FQCGVBNBZTX \
  | 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: c5512eb6ed8f66a1af85808d50b4399dc4016938cf18cbb51b6ee3baae28bde0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3bcd75d0a0e5d52cdb3a24a243191b67be31f9d1292fa94bbaf836f8255a40cf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-02-16T12:01:02Z",
    "title_canon_sha256": "dcc206d62e849b950b8043892e583b4a32f197d801d6bf7e198b54b0bcdaf485"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.04935",
    "kind": "arxiv",
    "version": 1
  }
}