Pith Number

pith:PIRHQM5Z

pith:2020:PIRHQM5ZR3F5F4SPLSD63D5B5U

not attested not anchored not stored refs pending

Nested Barycentric Coordinate System as an Explicit Feature Map

Aryeh Kontorovich, Eran Kaufman, Gabriel Nivasch, Lee-Ad Gottlieb, Ofir Pele

arxiv:2002.01999 v1 · 2020-02-05 · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PIRHQM5ZR3F5F4SPLSD63D5B5U}

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	2026-07-05T00:38:48.519928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a227833b98ecbd2f24f5c87ed8fa1ed37645e14976bf3dcb91853ea5da9ba09

Aliases

arxiv: 2002.01999 · arxiv_version: 2002.01999v1 · doi: 10.48550/arxiv.2002.01999 · pith_short_12: PIRHQM5ZR3F5 · pith_short_16: PIRHQM5ZR3F5F4SP · pith_short_8: PIRHQM5Z

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/PIRHQM5ZR3F5F4SPLSD63D5B5U \
  | 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: 7a227833b98ecbd2f24f5c87ed8fa1ed37645e14976bf3dcb91853ea5da9ba09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba8c5e8f2f05d8702f3e458aaa5266f4b81a66100730c55967744f2b4937f797",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2020-02-05T21:27:06Z",
    "title_canon_sha256": "1cd277255d1e3100e490c3a401f1e84c77c0a8d856bb75bf6fca45d5364cec43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.01999",
    "kind": "arxiv",
    "version": 1
  }
}