Pith Number

pith:UD3JM77U

pith:2013:UD3JM77U727VQ4S3BGBPOGGFTV

not attested not anchored not stored refs pending

Approximate Least Squares

Christoph Unterrieder, Mario Huemer, Michael Lunglmayr

arxiv:1312.3134 v1 · 2013-12-11 · 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{UD3JM77U727VQ4S3BGBPOGGFTV}

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	2026-05-18T00:59:03.504013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0f6967ff4febf58725b0982f718c59d4e5457a946fad099e4f4211944b67604

Aliases

arxiv: 1312.3134 · arxiv_version: 1312.3134v1 · doi: 10.48550/arxiv.1312.3134 · pith_short_12: UD3JM77U727V · pith_short_16: UD3JM77U727VQ4S3 · pith_short_8: UD3JM77U

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/UD3JM77U727VQ4S3BGBPOGGFTV \
  | 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: a0f6967ff4febf58725b0982f718c59d4e5457a946fad099e4f4211944b67604

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aba26bd135b5dd61df9cfd3a0681cdbdba376dbe048cd2ae7a1f1af22155d3b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-12-11T12:14:08Z",
    "title_canon_sha256": "c86f511440607f64e621924da95d235f66c0b570edad82129b268aa575adcf3c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.3134",
    "kind": "arxiv",
    "version": 1
  }
}