Pith Number

pith:5M6WCDLE

pith:2018:5M6WCDLEYREU7DJJ4YRKJPCN3A

not attested not anchored not stored refs pending

Generic symmetric matrix pencils with bounded rank

Andrii Dmytryshyn, Fernando De Ter\'an, Froil\'an M. Dopico

arxiv:1808.03118 v1 · 2018-08-09 · math.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5M6WCDLEYREU7DJJ4YRKJPCN3A}

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	2026-05-18T00:08:30.150086Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb3d610d64c4494f8d29e622a4bc4dd81d49793d9a6290b3877eae78e2b443b1

Aliases

arxiv: 1808.03118 · arxiv_version: 1808.03118v1 · doi: 10.48550/arxiv.1808.03118 · pith_short_12: 5M6WCDLEYREU · pith_short_16: 5M6WCDLEYREU7DJJ · pith_short_8: 5M6WCDLE

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/5M6WCDLEYREU7DJJ4YRKJPCN3A \
  | 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: eb3d610d64c4494f8d29e622a4bc4dd81d49793d9a6290b3877eae78e2b443b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64b99489456471c7d279522dd11c2d2a53f2cd2a6df685f35b1c8b314d8519c7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2018-08-09T12:39:51Z",
    "title_canon_sha256": "23ab4321eed78dac9697406ee80875a7ba6facbd1d9d90acbcfbddf12399e218"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.03118",
    "kind": "arxiv",
    "version": 1
  }
}