Pith Number

pith:G4QK2PJR

pith:2015:G4QK2PJRPIQYEWC3EJQMBG6IPV

not attested not anchored not stored refs pending

Imaginaries and invariant types in existentially closed valued differential fields

Silvain Rideau

arxiv:1508.07935 v2 · 2015-08-31 · 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{G4QK2PJRPIQYEWC3EJQMBG6IPV}

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	2026-05-18T00:55:39.452088Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3720ad3d317a2182585b2260c09bc87d45c38bba5bfd9b93ba8f5ce73cbee7f6

Aliases

arxiv: 1508.07935 · arxiv_version: 1508.07935v2 · doi: 10.48550/arxiv.1508.07935 · pith_short_12: G4QK2PJRPIQY · pith_short_16: G4QK2PJRPIQYEWC3 · pith_short_8: G4QK2PJR

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/G4QK2PJRPIQYEWC3EJQMBG6IPV \
  | 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: 3720ad3d317a2182585b2260c09bc87d45c38bba5bfd9b93ba8f5ce73cbee7f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f407a7c52dc5f023427522e1109c8d113a2575c2a80354ad9866855a6279afb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2015-08-31T17:59:12Z",
    "title_canon_sha256": "1d47e9b9c0f263e5aff1783611f37f40ca563b29cd87203a3c0dd23492ef101b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.07935",
    "kind": "arxiv",
    "version": 2
  }
}