Pith Number

pith:ZEYHARKA

pith:2018:ZEYHARKA2T6ICDRP72X5E7G6RJ

not attested not anchored not stored refs pending

Fast Matrix Inversion and Determinant Computation for Polarimetric Synthetic Aperture Radar

A. C. Frery, D. F. G. Coelho, R. J. Cintra, V. S. Dimitrov

arxiv:1807.08084 v1 · 2018-07-21 · cs.NA · cs.DS · eess.SP · math.NA · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZEYHARKA2T6ICDRP72X5E7G6RJ}

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	2026-05-18T00:10:09.362101Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c930704540d4fc810e2ffeafd27cde8a63816d6d5c9759b3fb1d1702b11d185c

Aliases

arxiv: 1807.08084 · arxiv_version: 1807.08084v1 · doi: 10.48550/arxiv.1807.08084 · pith_short_12: ZEYHARKA2T6I · pith_short_16: ZEYHARKA2T6ICDRP · pith_short_8: ZEYHARKA

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/ZEYHARKA2T6ICDRP72X5E7G6RJ \
  | 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: c930704540d4fc810e2ffeafd27cde8a63816d6d5c9759b3fb1d1702b11d185c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56d56bb3bdefddc734c9940e93324f5af70358b76606b3d511e1edabe7c8a6a9",
    "cross_cats_sorted": [
      "cs.DS",
      "eess.SP",
      "math.NA",
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2018-07-21T04:52:06Z",
    "title_canon_sha256": "4776435af32f367735d89fd08b1b0adb2816913a7697bf5d87cfc8668c7bea36"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.08084",
    "kind": "arxiv",
    "version": 1
  }
}