Pith Number

pith:KPPSKR63

pith:2013:KPPSKR635GTMP3O26HZPVQEAQG

not attested not anchored not stored refs pending

A multi-level preconditioned Krylov method for the efficient solution of algebraic tomographic reconstruction problems

J. Sijbers, Pieter Ghysels, Siegfried Cools, Wim van Aarle, Wim Vanroose

arxiv:1310.0956 v5 · 2013-10-03 · 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{KPPSKR635GTMP3O26HZPVQEAQG}

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	2026-05-18T02:29:01.794634Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53df2547dbe9a6c7eddaf1f2fac080818351b684d7ddd7203333f7e2976715e6

Aliases

arxiv: 1310.0956 · arxiv_version: 1310.0956v5 · doi: 10.48550/arxiv.1310.0956 · pith_short_12: KPPSKR635GTM · pith_short_16: KPPSKR635GTMP3O2 · pith_short_8: KPPSKR63

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/KPPSKR635GTMP3O26HZPVQEAQG \
  | 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: 53df2547dbe9a6c7eddaf1f2fac080818351b684d7ddd7203333f7e2976715e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "891e41d52b0362bdeb1e93357db363a3771f11dc060ae80d01fa828de8edc107",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-10-03T12:24:12Z",
    "title_canon_sha256": "897fa9a33c83945da64ba0a024f14c459549c93433b2cbbe76a34cabaf3128bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.0956",
    "kind": "arxiv",
    "version": 5
  }
}