Pith Number

pith:IE7JNELG

pith:2017:IE7JNELG4YUSZPUFRZHLBX7JGI

not attested not anchored not stored refs pending

A sharpening of a problem on Bernstein polynomials and convex functions

Ioan Rasa, Ulrich Abel

arxiv:1707.00127 v1 · 2017-07-01 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IE7JNELG4YUSZPUFRZHLBX7JGI}

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	2026-05-18T00:41:06.397278Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

413e969166e6292cbe858e4eb0dfe932348a933c33d00b40b03d243b264f3709

Aliases

arxiv: 1707.00127 · arxiv_version: 1707.00127v1 · doi: 10.48550/arxiv.1707.00127 · pith_short_12: IE7JNELG4YUS · pith_short_16: IE7JNELG4YUSZPUF · pith_short_8: IE7JNELG

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/IE7JNELG4YUSZPUFRZHLBX7JGI \
  | 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: 413e969166e6292cbe858e4eb0dfe932348a933c33d00b40b03d243b264f3709

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "266f43795f129441c8826d6b0425d483a947b607e73c995eea3c00fedaf0d33f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2017-07-01T09:45:50Z",
    "title_canon_sha256": "c9a8154b3403e161c1b889a0a9a234a50ffbd53539a95f2c52a52dfe9abdf0b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.00127",
    "kind": "arxiv",
    "version": 1
  }
}