Pith Number

pith:XM7DCPZO

pith:2016:XM7DCPZO7BKHXMFY55ANKWNX4A

not attested not anchored not stored refs pending

The least error method for sparse solution reconstruction

Barbara Kaltenbacher, Elena Resmerita, Kristian Bredies

arxiv:1602.04429 v1 · 2016-02-14 · 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{XM7DCPZO7BKHXMFY55ANKWNX4A}

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	2026-05-18T01:10:07.023423Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb3e313f2ef8547bb0b8ef40d559b7e03b8c92f7cf9cf4d44f4b8099f57a8d88

Aliases

arxiv: 1602.04429 · arxiv_version: 1602.04429v1 · doi: 10.48550/arxiv.1602.04429 · pith_short_12: XM7DCPZO7BKH · pith_short_16: XM7DCPZO7BKHXMFY · pith_short_8: XM7DCPZO

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/XM7DCPZO7BKHXMFY55ANKWNX4A \
  | 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: bb3e313f2ef8547bb0b8ef40d559b7e03b8c92f7cf9cf4d44f4b8099f57a8d88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33ce0a4c62f3386af03f807b92d43638d6762e5054820eecbee5b5a3d8865380",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-02-14T08:20:10Z",
    "title_canon_sha256": "476f04eaf7ad26b425c5ac139977a73299f4504a7e40348848461555c432cc7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.04429",
    "kind": "arxiv",
    "version": 1
  }
}