Pith Number

pith:AWH6YMKG

pith:2015:AWH6YMKGVR5AZ2USVASL3SVLGQ

not attested not anchored not stored refs pending

Identification of Matrices having a Sparse Representation

G\"otz E. Pfander, Holger Rauhut, Jared Tanner

arxiv:1504.05807 v1 · 2015-04-22 · 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{AWH6YMKGVR5AZ2USVASL3SVLGQ}

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	2026-05-18T02:18:05.041340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

058fec3146ac7a0cea92a824bdcaab34247e4bd098cc5cccb56800134c90b46d

Aliases

arxiv: 1504.05807 · arxiv_version: 1504.05807v1 · doi: 10.48550/arxiv.1504.05807 · pith_short_12: AWH6YMKGVR5A · pith_short_16: AWH6YMKGVR5AZ2US · pith_short_8: AWH6YMKG

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/AWH6YMKGVR5AZ2USVASL3SVLGQ \
  | 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: 058fec3146ac7a0cea92a824bdcaab34247e4bd098cc5cccb56800134c90b46d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9463f7c089e0b8d3b118136ee88e4e794b79b4a41f2942029adb509efc48da5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-04-22T13:54:36Z",
    "title_canon_sha256": "cab025ff3db0a978e947a149b0a05b1bf405a5df5ec1863a97e585452a15b5ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.05807",
    "kind": "arxiv",
    "version": 1
  }
}