Pith Number

pith:AUKG52DI

pith:2009:AUKG52DIPRS3YIIWS4G24PD7U6

not attested not anchored not stored refs pending

Effective Choice and Boundedness Principles in Computable Analysis

Guido Gherardi, Vasco Brattka

arxiv:0905.4685 v4 · 2009-05-28 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AUKG52DIPRS3YIIWS4G24PD7U6}

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	2026-05-18T04:32:00.800806Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05146ee8687c65bc2116970dae3c7fa79b1ada51d40cb6bb4f989e5f841e23fc

Aliases

arxiv: 0905.4685 · arxiv_version: 0905.4685v4 · doi: 10.48550/arxiv.0905.4685 · pith_short_12: AUKG52DIPRS3 · pith_short_16: AUKG52DIPRS3YIIW · pith_short_8: AUKG52DI

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/AUKG52DIPRS3YIIWS4G24PD7U6 \
  | 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: 05146ee8687c65bc2116970dae3c7fa79b1ada51d40cb6bb4f989e5f841e23fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e7936eac0fdb1e55390b42c727108efe628fa31ca3eb11a064145bea73fb594",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2009-05-28T15:50:57Z",
    "title_canon_sha256": "b12cb1eca6867b1232794e05354c1d6de3e583130bdff296ddfc6396226e09e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.4685",
    "kind": "arxiv",
    "version": 4
  }
}