Pith Number

pith:AIHCBHGQ

pith:1998:AIHCBHGQE3OHBEWBNFEGXKCSD3

not attested not anchored not stored refs pending

On the cohomology of Galois groups determined by Witt rings

Alejandro Adem, Dikran Karagueuzian, Jan Minac

arxiv:math/9812169 v1 · 1998-12-22 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AIHCBHGQE3OHBEWBNFEGXKCSD3}

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	2026-05-18T01:05:33.422736Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

020e209cd026dc7092c169486ba8521eced76b03d8896be45ccb791e6ff17013

Aliases

arxiv: math/9812169 · arxiv_version: math/9812169v1 · doi: 10.48550/arxiv.math/9812169 · pith_short_12: AIHCBHGQE3OH · pith_short_16: AIHCBHGQE3OHBEWB · pith_short_8: AIHCBHGQ

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/AIHCBHGQE3OHBEWBNFEGXKCSD3 \
  | 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: 020e209cd026dc7092c169486ba8521eced76b03d8896be45ccb791e6ff17013

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6470598f9f3850c034800be4f25edaebea9c93de9cbb0c280f8f8af3bc7c9c2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.AT",
    "submitted_at": "1998-12-22T00:00:00Z",
    "title_canon_sha256": "8a827d1ae6a47334196637b411358bec2e9481d9970776149f8a1592efddb2f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9812169",
    "kind": "arxiv",
    "version": 1
  }
}