Pith Number

pith:ERVB2UR7

pith:2019:ERVB2UR7HFL2JAISRYCW2764G7

not attested not anchored not stored refs pending

The Smooth Selection Embedding Method with Chebyshev Polynomials

Daniel Agress, Dong Yan, Patrick Guidotti

arxiv:1902.03713 v1 · 2019-02-11 · 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{ERVB2UR7HFL2JAISRYCW2764G7}

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	2026-05-17T23:54:19.778975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

246a1d523f3957a481128e056d7fdc37f6e5024ff9dbe2a42147028c41c1b2b7

Aliases

arxiv: 1902.03713 · arxiv_version: 1902.03713v1 · doi: 10.48550/arxiv.1902.03713 · pith_short_12: ERVB2UR7HFL2 · pith_short_16: ERVB2UR7HFL2JAIS · pith_short_8: ERVB2UR7

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/ERVB2UR7HFL2JAISRYCW2764G7 \
  | 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: 246a1d523f3957a481128e056d7fdc37f6e5024ff9dbe2a42147028c41c1b2b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e935a78dd21dc56610d713288314adf6683a3d6b985be0bd2e594bec80022695",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-02-11T03:36:24Z",
    "title_canon_sha256": "ea0cf6970d372d0293dc62b9e16e75cb3a4d9a06b93199e04df08b3f88b1222e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.03713",
    "kind": "arxiv",
    "version": 1
  }
}