Pith Number

pith:ZACHHLVK

pith:2016:ZACHHLVK6DWHDJQN7AX6QPFPQF

not attested not anchored not stored refs pending

Memory-Usage Advantageous Block Recursive Matrix Inverse

Iria C. S. Cosme, Isaac F. Fernandes, Jo\~ao L. de Carvalho, Samuel Xavier-de-Souza

arxiv:1612.00001 v2 · 2016-11-30 · 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{ZACHHLVK6DWHDJQN7AX6QPFPQF}

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	2026-05-18T00:16:45.645785Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c80473aeaaf0ec71a60df82fe83caf8163b7ce9863d13ce36b23630162bb8f3d

Aliases

arxiv: 1612.00001 · arxiv_version: 1612.00001v2 · doi: 10.48550/arxiv.1612.00001 · pith_short_12: ZACHHLVK6DWH · pith_short_16: ZACHHLVK6DWHDJQN · pith_short_8: ZACHHLVK

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/ZACHHLVK6DWHDJQN7AX6QPFPQF \
  | 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: c80473aeaaf0ec71a60df82fe83caf8163b7ce9863d13ce36b23630162bb8f3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9d3e867277aa6eb3da0bf25be9b8089ff6f46b16d8591c98fed559cf0de1c58",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-11-30T11:41:52Z",
    "title_canon_sha256": "19b4621d288fd4eede24c086626b2635e2bd0efbd6a55f5cc367bf2e0c824067"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.00001",
    "kind": "arxiv",
    "version": 2
  }
}