Pith Number

pith:ZJATSIVK

pith:2018:ZJATSIVKZKXBSHICYH7X7EMAV2

not attested not anchored not stored refs pending

Guo's index for some classes of matrices

Mar\'ia Robbiano

arxiv:1806.09978 v1 · 2018-06-22 · 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{ZJATSIVKZKXBSHICYH7X7EMAV2}

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	2026-05-18T00:12:22.562984Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca413922aacaae191d02c1ff7f9180ae8310b025bc80a2e77d97d8037fae7a51

Aliases

arxiv: 1806.09978 · arxiv_version: 1806.09978v1 · doi: 10.48550/arxiv.1806.09978 · pith_short_12: ZJATSIVKZKXB · pith_short_16: ZJATSIVKZKXBSHIC · pith_short_8: ZJATSIVK

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/ZJATSIVKZKXBSHICYH7X7EMAV2 \
  | 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: ca413922aacaae191d02c1ff7f9180ae8310b025bc80a2e77d97d8037fae7a51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e54b93e926a34c31ad0ea30d500c3680438ae1016fe19775973ef8193a954c45",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2018-06-22T20:13:54Z",
    "title_canon_sha256": "60e918be358cbb5274b4179f1664ef2453da3b3bd5c7ffa170820feeeb477632"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.09978",
    "kind": "arxiv",
    "version": 1
  }
}