Pith Number

pith:4UNGI3GR

pith:2018:4UNGI3GRZ2PQDIYAGXM4FD6BOK

not attested not anchored not stored refs pending

Generic non-extendability and total unboundedness in function spaces

A. G. Siskakis, A. Stavrianidi, S. Vlachos, V. Nestoridis

arxiv:1811.04408 v1 · 2018-11-11 · math.CV · math.CA · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4UNGI3GRZ2PQDIYAGXM4FD6BOK}

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	2026-05-18T00:01:05.260488Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e51a646cd1ce9f01a30035d9c28fc1728c803cf02abf6153e239913d2bdbeb11

Aliases

arxiv: 1811.04408 · arxiv_version: 1811.04408v1 · doi: 10.48550/arxiv.1811.04408 · pith_short_12: 4UNGI3GRZ2PQ · pith_short_16: 4UNGI3GRZ2PQDIYA · pith_short_8: 4UNGI3GR

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/4UNGI3GRZ2PQDIYAGXM4FD6BOK \
  | 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: e51a646cd1ce9f01a30035d9c28fc1728c803cf02abf6153e239913d2bdbeb11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8db75ee356db16b6cfe6b75cc4165b96b3ebd2ceb67c928c1a9fdc5a18f17c4",
    "cross_cats_sorted": [
      "math.CA",
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2018-11-11T12:46:48Z",
    "title_canon_sha256": "611be6bba89f29c1d7617f72e8b5f3887d82f89297229e77babba4ff0ec8c19d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.04408",
    "kind": "arxiv",
    "version": 1
  }
}