Pith Number

pith:AGAMTSC5

pith:2016:AGAMTSC52RCQWSMCGF6KB3NNUH

not attested not anchored not stored refs pending

Efficient Frequent Directions Algorithm for Sparse Matrices

Edo Liberty, Jeff M. Phillips, Mina Ghashami

arxiv:1602.00412 v2 · 2016-02-01 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AGAMTSC52RCQWSMCGF6KB3NNUH}

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	2026-05-18T01:20:28.975933Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0180c9c85dd4450b4982317ca0edada1f48c900a0cc858e98eb6f0438d7b3e8f

Aliases

arxiv: 1602.00412 · arxiv_version: 1602.00412v2 · doi: 10.48550/arxiv.1602.00412 · pith_short_12: AGAMTSC52RCQ · pith_short_16: AGAMTSC52RCQWSMC · pith_short_8: AGAMTSC5

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/AGAMTSC52RCQWSMCGF6KB3NNUH \
  | 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: 0180c9c85dd4450b4982317ca0edada1f48c900a0cc858e98eb6f0438d7b3e8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccb8185c4b1f8ed23844d2b5a7d2c3349a3891c00850c9f8d3c48758801289ab",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2016-02-01T07:33:02Z",
    "title_canon_sha256": "f07d51e834634ea506ba3067d9ea1ae36310250d6ba9a2df77c537750538790a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.00412",
    "kind": "arxiv",
    "version": 2
  }
}