Pith Number

pith:AY4EZGPV

pith:2020:AY4EZGPVZ2WPH6PGEGDDYMWQAC

not attested not anchored not stored refs pending

The Lost Melody Theorem for Infinite Time Blum-Shub-Smale Machines

Merlin Carl

arxiv:2009.10582 v2 · 2020-09-22 · 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{AY4EZGPVZ2WPH6PGEGDDYMWQAC}

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	2026-05-20T00:05:23.568496Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06384c99f5ceacf3f9e621863c32d00087ca7e79e16384f146499e10ef9e0a47

Aliases

arxiv: 2009.10582 · arxiv_version: 2009.10582v2 · doi: 10.48550/arxiv.2009.10582 · pith_short_12: AY4EZGPVZ2WP · pith_short_16: AY4EZGPVZ2WPH6PG · pith_short_8: AY4EZGPV

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/AY4EZGPVZ2WPH6PGEGDDYMWQAC \
  | 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: 06384c99f5ceacf3f9e621863c32d00087ca7e79e16384f146499e10ef9e0a47

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70ee7d08846bcad41dbba804bb6c3a8d34793d3d995285c5b1b3246411557b3d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2020-09-22T14:46:12Z",
    "title_canon_sha256": "72864cf072eb2c550489c4c5198e65e424000160f3a2a07bc1a42775e9108ef8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.10582",
    "kind": "arxiv",
    "version": 2
  }
}