Pith Number

pith:FL6PC4GW

pith:2019:FL6PC4GWKALOBNSXKU7UV2ESAB

not attested not anchored not stored refs pending

Partially isometric matrices: a brief and selective survey

Matthew Okubo Patterson, Stephan Ramon Garcia, William T. Ross

arxiv:1903.11648 v1 · 2019-03-27 · math.FA · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FL6PC4GWKALOBNSXKU7UV2ESAB}

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	2026-05-17T23:50:02.126336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2afcf170d65016e0b657553f4ae892005691a4845e2848a8a72201331c9ec00e

Aliases

arxiv: 1903.11648 · arxiv_version: 1903.11648v1 · doi: 10.48550/arxiv.1903.11648 · pith_short_12: FL6PC4GWKALO · pith_short_16: FL6PC4GWKALOBNSX · pith_short_8: FL6PC4GW

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/FL6PC4GWKALOBNSXKU7UV2ESAB \
  | 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: 2afcf170d65016e0b657553f4ae892005691a4845e2848a8a72201331c9ec00e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "200a57e61c02f6b8df518c7ac7bac615bb61de95017776bee76b06f08dc81f6d",
    "cross_cats_sorted": [
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2019-03-27T18:52:41Z",
    "title_canon_sha256": "f3d0aa5bcc01ed4ceee07e2eabe6571a500e81f5188e7c0157704b6a09377dc0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.11648",
    "kind": "arxiv",
    "version": 1
  }
}