Pith Number

pith:X63JUZI4

pith:2011:X63JUZI4PDAIO65IOYLSV743RC

not attested not anchored not stored refs pending

Faster Subset Selection for Matrices and Applications

Christos Boutsidis, Haim Avron

arxiv:1201.0127 v4 · 2011-12-30 · cs.DS · cs.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{X63JUZI4PDAIO65IOYLSV743RC}

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	2026-05-18T03:20:18.756444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfb69a651c78c0877ba876172aff9b88a26c6d6a29ce0e0969d7876887e06898

Aliases

arxiv: 1201.0127 · arxiv_version: 1201.0127v4 · doi: 10.48550/arxiv.1201.0127 · pith_short_12: X63JUZI4PDAI · pith_short_16: X63JUZI4PDAIO65I · pith_short_8: X63JUZI4

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/X63JUZI4PDAIO65IOYLSV743RC \
  | 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: bfb69a651c78c0877ba876172aff9b88a26c6d6a29ce0e0969d7876887e06898

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3864f145a8ac1347bfb6d9faec7d44df33b55c01c368b06207afb94d6c2a74ed",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-12-30T13:54:29Z",
    "title_canon_sha256": "d602101588f00aa5706f2fd07faf7a8c5f3117498f88a65069d0c8af162daeb6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.0127",
    "kind": "arxiv",
    "version": 4
  }
}